Italy: Lazio
Contents: Lazio
Region
5,502,886 Population [2011] – census
5,720,272 Population [2024] – estimate
17,232km² Area
332.0/km² Density [2024]
Provinces
All provinces in the Region of Latium (Lazio).
| Name | Status | Population Census 1981-10-25 | Population Census 1991-10-20 | Population Census 2001-10-21 | Population Census 2011-10-09 | Population Estimate 2024-01-01 | |
|---|---|---|---|---|---|---|---|
| Frosinone | Province | 460,395 | 479,559 | 484,566 | 492,661 | 464,988 | → |
| Latina | Province | 434,086 | 476,282 | 491,230 | 544,732 | 566,485 | → |
| Rieti | Province | 142,794 | 144,942 | 147,410 | 155,164 | 150,320 | → |
| Roma [Rome] | Metropolitan City | 3,695,961 | 3,761,067 | 3,700,424 | 3,997,465 | 4,230,292 | → |
| Viterbo | Province | 268,448 | 278,521 | 288,783 | 312,864 | 308,187 | → |
| Lazio [Latium] | Region | 5,001,684 | 5,140,371 | 5,112,413 | 5,502,886 | 5,720,272 |
Contents: Communes
All communes in the Region of Latium (Lazio).
icon links to further information about a selected place including its population structure (gender, age groups, age distribution, citizenship).| Name | Status | Province | Population Census 1981-10-25 | Population Census 1991-10-20 | Population Census 2001-10-21 | Population Census 2011-10-09 | Population Estimate 2024-01-01 | |
|---|---|---|---|---|---|---|---|---|
| Accumoli | Commune | Rieti | 985 | 758 | 724 | 653 | 516 | → |
| Acquafondata | Commune | Frosinone | 418 | 371 | 316 | 282 | 258 | → |
| Acquapendente | Commune | Viterbo | 5,849 | 5,886 | 5,788 | 5,655 | 5,308 | → |
| Acuto | Commune | Frosinone | 1,763 | 1,826 | 1,857 | 1,910 | 1,820 | → |
| Affile | Commune | Roma | 1,564 | 1,639 | 1,644 | 1,552 | 1,410 | → |
| Agosta | Commune | Roma | 1,217 | 1,450 | 1,617 | 1,760 | 1,680 | → |
| Alatri | Commune | Frosinone | 22,809 | 25,038 | 27,068 | 28,609 | 27,639 | → |
| Albano Laziale | Commune | Roma | 28,062 | 31,399 | 33,692 | 38,433 | 39,753 | → |
| Allumiere | Commune | Roma | 4,130 | 4,273 | 4,187 | 4,133 | 3,745 | → |
| Alvito | Commune | Frosinone | 3,113 | 3,151 | 3,031 | 2,852 | 2,483 | → |
| Amaseno | Commune | Frosinone | 3,911 | 4,110 | 4,228 | 4,314 | 4,087 | → |
| Amatrice | Commune | Rieti | 3,336 | 3,042 | 2,807 | 2,646 | 2,215 | → |
| Anagni | Commune | Frosinone | 18,618 | 19,314 | 19,134 | 21,441 | 20,635 | → |
| Anguillara Sabazia | Commune | Roma | 6,640 | 10,083 | 14,236 | 18,575 | 19,089 | → |
| Anticoli Corrado | Commune | Roma | 931 | 940 | 910 | 942 | 847 | → |
| Antrodoco | Commune | Rieti | 3,028 | 3,011 | 2,845 | 2,704 | 2,306 | → |
| Anzio | Commune | Roma | 27,169 | 33,497 | 36,952 | 49,731 | 59,355 | → |
| Aprilia | Commune | Latina | 37,807 | 47,037 | 56,028 | 66,979 | 74,572 | → |
| Aquino | Commune | Frosinone | 5,001 | 5,386 | 5,337 | 5,309 | 4,908 | → |
| Arce | Commune | Frosinone | 6,074 | 6,174 | 6,029 | 5,783 | 5,387 | → |
| Arcinazzo Romano | Commune | Roma | 1,479 | 1,379 | 1,334 | 1,394 | 1,218 | → |
| Ardea | Commune | Roma | 10,175 | 16,854 | 26,711 | 44,202 | 50,116 | → |
| Ariccia | Commune | Roma | 14,565 | 16,953 | 17,865 | 18,311 | 17,997 | → |
| Arlena di Castro | Commune | Viterbo | 869 | 920 | 867 | 886 | 820 | → |
| Arnara | Commune | Frosinone | 2,469 | 2,515 | 2,454 | 2,379 | 2,202 | → |
| Arpino | Commune | Frosinone | 7,847 | 8,006 | 7,614 | 7,386 | 6,619 | → |
| Arsoli | Commune | Roma | 1,572 | 1,582 | 1,537 | 1,647 | 1,367 | → |
| Artena | Commune | Roma | 9,819 | 10,731 | 11,828 | 13,665 | 13,638 | → |
| Ascrea | Commune | Rieti | 308 | 318 | 284 | 266 | 205 | → |
| Atina | Commune | Frosinone | 4,808 | 4,692 | 4,484 | 4,461 | 4,125 | → |
| Ausonia | Commune | Frosinone | 2,504 | 2,501 | 2,563 | 2,650 | 2,395 | → |
| Bagnoregio | Commune | Viterbo | 3,897 | 3,857 | 3,639 | 3,674 | 3,336 | → |
| Barbarano Romano | Commune | Viterbo | 825 | 897 | 950 | 1,085 | 1,004 | → |
| Bassano in Teverina | Commune | Viterbo | 1,022 | 1,125 | 1,134 | 1,277 | 1,283 | → |
| Bassano Romano | Commune | Viterbo | 3,579 | 3,786 | 4,277 | 4,834 | 4,641 | → |
| Bassiano | Commune | Latina | 1,535 | 1,635 | 1,617 | 1,580 | 1,430 | → |
| Bellegra | Commune | Roma | 3,003 | 3,134 | 3,029 | 2,948 | 2,626 | → |
| Belmonte Castello | Commune | Frosinone | 783 | 781 | 765 | 778 | 677 | → |
| Belmonte in Sabina | Commune | Rieti | 583 | 627 | 617 | 649 | 629 | → |
| Blera | Commune | Viterbo | 3,084 | 3,193 | 3,208 | 3,356 | 2,903 | → |
| Bolsena | Commune | Viterbo | 3,985 | 4,064 | 4,111 | 4,137 | 3,671 | → |
| Bomarzo | Commune | Viterbo | 1,459 | 1,463 | 1,615 | 1,814 | 1,691 | → |
| Borbona | Commune | Rieti | 751 | 734 | 725 | 650 | 573 | → |
| Borgorose | Commune | Rieti | 4,799 | 4,630 | 4,524 | 4,615 | 4,202 | → |
| Borgo Velino | Commune | Rieti | 724 | 845 | 922 | 990 | 915 | → |
| Boville Ernica | Commune | Frosinone | 8,209 | 8,773 | 8,873 | 8,811 | 8,301 | → |
| Bracciano | Commune | Roma | 10,659 | 11,160 | 13,436 | 18,549 | 18,516 | → |
| Broccostella | Commune | Frosinone | 2,002 | 2,396 | 2,646 | 2,807 | 2,638 | → |
| Calcata | Commune | Viterbo | 690 | 886 | 846 | 905 | 913 | → |
| Camerata Nuova | Commune | Roma | 497 | 486 | 476 | 460 | 413 | → |
| Campagnano di Roma | Commune | Roma | 4,817 | 6,874 | 8,708 | 11,107 | 10,993 | → |
| Campodimele | Commune | Latina | 828 | 762 | 733 | 638 | 564 | → |
| Campoli Appennino | Commune | Frosinone | 1,604 | 1,815 | 1,804 | 1,749 | 1,612 | → |
| Canale Monterano | Commune | Roma | 2,316 | 2,698 | 3,298 | 4,071 | 4,151 | → |
| Canepina | Commune | Viterbo | 3,073 | 3,098 | 3,095 | 3,149 | 2,920 | → |
| Canino | Commune | Viterbo | 5,109 | 5,251 | 5,072 | 5,270 | 5,005 | → |
| Cantalice | Commune | Rieti | 2,659 | 2,753 | 2,875 | 2,726 | 2,456 | → |
| Cantalupo in Sabina | Commune | Rieti | 1,336 | 1,489 | 1,621 | 1,736 | 1,662 | → |
| Canterano | Commune | Roma | 357 | 401 | 372 | 359 | 370 | → |
| Capena | Commune | Roma | 3,530 | 4,875 | 5,826 | 9,488 | 10,860 | → |
| Capodimonte | Commune | Viterbo | 1,647 | 1,693 | 1,686 | 1,741 | 1,671 | → |
| Capranica | Commune | Viterbo | 4,208 | 4,776 | 5,604 | 6,644 | 6,374 | → |
| Capranica Prenestina | Commune | Roma | 336 | 307 | 334 | 330 | 316 | → |
| Caprarola | Commune | Viterbo | 4,780 | 4,913 | 5,197 | 5,345 | 5,153 | → |
| Carbognano | Commune | Viterbo | 1,910 | 2,012 | 1,918 | 2,042 | 1,956 | → |
| Carpineto Romano | Commune | Roma | 5,259 | 5,189 | 4,936 | 4,649 | 3,999 | → |
| Casalattico | Commune | Frosinone | 755 | 720 | 675 | 641 | 524 | → |
| Casalvieri | Commune | Frosinone | 3,023 | 3,216 | 3,211 | 2,867 | 2,442 | → |
| Casape | Commune | Roma | 864 | 812 | 746 | 737 | 612 | → |
| Casaprota | Commune | Rieti | 715 | 695 | 686 | 723 | 670 | → |
| Casperia | Commune | Rieti | 1,035 | 1,032 | 1,081 | 1,231 | 1,199 | → |
| Cassino | Commune | Frosinone | 31,462 | 32,787 | 32,762 | 33,658 | 35,039 | → |
| Castel di Tora | Commune | Rieti | 387 | 330 | 286 | 299 | 274 | → |
| Castelforte | Commune | Latina | 4,768 | 4,877 | 4,518 | 4,401 | 4,073 | → |
| Castel Gandolfo | Commune | Roma | 6,246 | 6,843 | 7,930 | 8,782 | 8,651 | → |
| Castelliri | Commune | Frosinone | 3,178 | 3,521 | 3,560 | 3,533 | 3,173 | → |
| Castel Madama | Commune | Roma | 5,656 | 6,407 | 6,415 | 7,328 | 7,047 | → |
| Castelnuovo di Farfa | Commune | Rieti | 810 | 823 | 929 | 1,047 | 996 | → |
| Castelnuovo di Porto | Commune | Roma | 4,371 | 5,897 | 7,181 | 8,059 | 8,622 | → |
| Castelnuovo Parano | Commune | Frosinone | 797 | 845 | 876 | 902 | 845 | → |
| Castel San Pietro Romano | Commune | Roma | 631 | 698 | 743 | 855 | 848 | → |
| Castel Sant'Angelo | Commune | Rieti | 1,255 | 1,320 | 1,282 | 1,289 | 1,187 | → |
| Castel Sant'Elia | Commune | Viterbo | 1,738 | 1,935 | 2,151 | 2,558 | 2,429 | → |
| Castiglione in Teverina | Commune | Viterbo | 2,341 | 2,321 | 2,261 | 2,385 | 2,300 | → |
| Castrocielo | Commune | Frosinone | 3,528 | 3,710 | 3,750 | 3,969 | 3,780 | → |
| Castro dei Volsci | Commune | Frosinone | 5,218 | 5,178 | 5,039 | 4,903 | 4,423 | → |
| Cave | Commune | Roma | 7,821 | 8,584 | 9,529 | 10,421 | 10,822 | → |
| Ceccano | Commune | Frosinone | 20,927 | 22,121 | 22,334 | 23,098 | 22,215 | → |
| Celleno | Commune | Viterbo | 1,147 | 1,271 | 1,339 | 1,343 | 1,307 | → |
| Cellere | Commune | Viterbo | 1,651 | 1,437 | 1,301 | 1,230 | 1,080 | → |
| Ceprano | Commune | Frosinone | 8,380 | 8,546 | 8,246 | 8,740 | 8,031 | → |
| Cerreto Laziale | Commune | Roma | 1,007 | 1,077 | 1,057 | 1,192 | 1,073 | → |
| Cervara di Roma | Commune | Roma | 502 | 495 | 471 | 472 | 461 | → |
| Cervaro | Commune | Frosinone | 5,647 | 6,680 | 7,022 | 7,744 | 7,785 | → |
| Cerveteri | Commune | Roma | 12,775 | 20,625 | 26,772 | 35,207 | 37,950 | → |
| Ciampino | Commune | Roma | 32,349 | 35,685 | 36,074 | 37,235 | 38,774 | → |
| Ciciliano | Commune | Roma | 1,028 | 1,073 | 1,133 | 1,353 | 1,250 | → |
| Cineto Romano | Commune | Roma | 570 | 537 | 612 | 641 | 589 | → |
| Cisterna di Latina | Commune | Latina | 28,189 | 31,463 | 32,584 | 35,551 | 36,168 | → |
| Cittaducale | Commune | Rieti | 5,506 | 6,434 | 6,542 | 6,900 | 6,411 | → |
| Cittareale | Commune | Rieti | 707 | 552 | 482 | 470 | 395 | → |
| Civita Castellana | Commune | Viterbo | 15,606 | 15,454 | 15,219 | 15,596 | 15,175 | → |
| Civitavecchia | Commune | Roma | 49,389 | 51,201 | 50,032 | 51,229 | 51,750 | → |
| Civitella d'Agliano | Commune | Viterbo | 1,769 | 1,765 | 1,734 | 1,658 | 1,450 | → |
| Civitella San Paolo | Commune | Roma | 1,328 | 1,386 | 1,547 | 1,754 | 1,998 | → |
| Colfelice | Commune | Frosinone | 1,718 | 1,917 | 1,853 | 1,853 | 1,782 | → |
| Collalto Sabino | Commune | Rieti | 607 | 539 | 497 | 440 | 382 | → |
| Colle di Tora | Commune | Rieti | 446 | 412 | 383 | 384 | 371 | → |
| Colleferro | Commune | Roma | 20,259 | 20,392 | 20,723 | 21,574 | 20,487 | → |
| Collegiove | Commune | Rieti | 260 | 201 | 176 | 169 | 123 | → |
| Collepardo | Commune | Frosinone | 803 | 867 | 928 | 975 | 883 | → |
| Colle San Magno | Commune | Frosinone | 967 | 895 | 819 | 744 | 616 | → |
| Collevecchio | Commune | Rieti | 1,471 | 1,462 | 1,480 | 1,595 | 1,593 | → |
| Colli sul Velino | Commune | Rieti | 451 | 462 | 516 | 524 | 455 | → |
| Colonna | Commune | Roma | 2,476 | 3,059 | 3,329 | 4,002 | 4,248 | → |
| Concerviano | Commune | Rieti | 488 | 461 | 386 | 311 | 278 | → |
| Configni | Commune | Rieti | 783 | 752 | 705 | 672 | 574 | → |
| Contigliano | Commune | Rieti | 2,925 | 3,142 | 3,408 | 3,601 | 3,673 | → |
| Corchiano | Commune | Viterbo | 2,679 | 3,067 | 3,337 | 3,740 | 3,570 | → |
| Coreno Ausonio | Commune | Frosinone | 1,853 | 1,876 | 1,738 | 1,671 | 1,517 | → |
| Cori | Commune | Latina | 10,205 | 10,257 | 10,529 | 11,025 | 10,461 | → |
| Cottanello | Commune | Rieti | 655 | 597 | 572 | 562 | 526 | → |
| Esperia | Commune | Frosinone | 4,514 | 4,380 | 4,131 | 3,903 | 3,557 | → |
| Fabrica di Roma | Commune | Viterbo | 4,084 | 5,231 | 6,654 | 8,136 | 8,199 | → |
| Faleria | Commune | Viterbo | 1,464 | 1,428 | 1,728 | 2,115 | 2,011 | → |
| Falvaterra | Commune | Frosinone | 578 | 587 | 630 | 567 | 513 | → |
| Fara in Sabina | Commune | Rieti | 8,002 | 9,319 | 10,810 | 12,326 | 13,853 | → |
| Farnese | Commune | Viterbo | 1,985 | 1,832 | 1,729 | 1,631 | 1,383 | → |
| Ferentino | Commune | Frosinone | 17,695 | 19,149 | 20,103 | 20,966 | 20,068 | → |
| Fiamignano | Commune | Rieti | 1,969 | 1,864 | 1,603 | 1,455 | 1,170 | → |
| Fiano Romano | Commune | Roma | 4,339 | 6,294 | 7,924 | 13,059 | 16,467 | → |
| Filacciano | Commune | Roma | 441 | 472 | 502 | 490 | 457 | → |
| Filettino | Commune | Frosinone | 675 | 614 | 550 | 551 | 535 | → |
| Fiuggi | Commune | Frosinone | 7,698 | 8,265 | 8,763 | 9,645 | 10,102 | → |
| Fiumicino | Commune | Roma | 34,529 | 41,342 | 50,535 | 67,626 | 82,506 | → |
| Fondi | Commune | Latina | 27,915 | 31,169 | 31,023 | 37,180 | 39,709 | → |
| Fontana Liri | Commune | Frosinone | 3,248 | 3,303 | 3,215 | 2,993 | 2,683 | → |
| Fontechiari | Commune | Frosinone | 1,253 | 1,287 | 1,288 | 1,318 | 1,222 | → |
| Fonte Nuova | Commune | Roma | 14,526 | 17,876 | 22,676 | 30,572 | 32,752 | → |
| Forano | Commune | Rieti | 2,164 | 2,364 | 2,453 | 2,933 | 3,259 | → |
| Formello | Commune | Roma | 5,245 | 7,574 | 9,271 | 11,909 | 13,765 | → |
| Formia | Commune | Latina | 30,399 | 34,957 | 34,931 | 36,331 | 36,937 | → |
| Frascati | Commune | Roma | 18,896 | 20,123 | 19,314 | 20,755 | 22,849 | → |
| Frasso Sabino | Commune | Rieti | 498 | 531 | 632 | 688 | 771 | → |
| Frosinone | Commune | Frosinone | 44,644 | 45,815 | 48,636 | 46,649 | 43,454 | → |
| Fumone | Commune | Frosinone | 2,037 | 2,093 | 2,153 | 2,180 | 1,947 | → |
| Gaeta | Commune | Latina | 23,379 | 22,334 | 21,179 | 20,762 | 19,332 | → |
| Gallese | Commune | Viterbo | 2,786 | 2,807 | 2,757 | 2,994 | 2,568 | → |
| Gallicano nel Lazio | Commune | Roma | 2,920 | 3,528 | 4,578 | 5,749 | 6,492 | → |
| Gallinaro | Commune | Frosinone | 1,067 | 1,159 | 1,221 | 1,246 | 1,182 | → |
| Gavignano | Commune | Roma | 1,526 | 1,606 | 1,760 | 1,956 | 1,875 | → |
| Genazzano | Commune | Roma | 4,717 | 5,065 | 5,314 | 5,959 | 5,669 | → |
| Genzano di Roma | Commune | Roma | 17,536 | 20,570 | 22,178 | 23,780 | 22,724 | → |
| Gerano | Commune | Roma | 1,134 | 1,133 | 1,201 | 1,248 | 1,143 | → |
| Giuliano di Roma | Commune | Frosinone | 2,136 | 2,239 | 2,228 | 2,343 | 2,294 | → |
| Gorga | Commune | Roma | 754 | 778 | 764 | 767 | 654 | → |
| Gradoli | Commune | Viterbo | 1,707 | 1,548 | 1,496 | 1,474 | 1,239 | → |
| Graffignano | Commune | Viterbo | 2,366 | 2,330 | 2,288 | 2,319 | 2,088 | → |
| Greccio | Commune | Rieti | 1,518 | 1,504 | 1,464 | 1,520 | 1,464 | → |
| Grottaferrata | Commune | Roma | 14,829 | 16,361 | 17,663 | 19,156 | 20,429 | → |
| Grotte di Castro | Commune | Viterbo | 3,429 | 3,187 | 2,967 | 2,795 | 2,400 | → |
| Guarcino | Commune | Frosinone | 1,841 | 1,691 | 1,662 | 1,658 | 1,504 | → |
| Guidonia Montecelio | Commune | Roma | 49,328 | 55,544 | 67,516 | 81,447 | 89,411 | → |
| Ischia di Castro | Commune | Viterbo | 2,669 | 2,609 | 2,464 | 2,377 | 2,104 | → |
| Isola del Liri | Commune | Frosinone | 13,045 | 12,794 | 12,191 | 11,963 | 10,644 | → |
| Itri | Commune | Latina | 6,847 | 7,949 | 8,749 | 10,460 | 10,425 | → |
| Jenne | Commune | Roma | 584 | 553 | 497 | 398 | 321 | → |
| Labico | Commune | Roma | 1,996 | 2,488 | 3,734 | 5,979 | 6,448 | → |
| Labro | Commune | Rieti | 340 | 293 | 352 | 344 | 354 | → |
| Ladispoli | Commune | Roma | 12,319 | 19,319 | 29,968 | 37,293 | 40,876 | → |
| Lanuvio | Commune | Roma | 6,444 | 8,177 | 9,994 | 13,006 | 12,900 | → |
| Lariano | Commune | Roma | 6,999 | 8,530 | 10,356 | 12,893 | 13,187 | → |
| Latera | Commune | Viterbo | 1,236 | 1,150 | 1,023 | 933 | 762 | → |
| Latina | Commune | Latina | 93,738 | 106,203 | 107,898 | 117,892 | 127,486 | → |
| Lenola | Commune | Latina | 3,705 | 4,087 | 4,131 | 4,155 | 4,066 | → |
| Leonessa | Commune | Rieti | 3,048 | 2,877 | 2,734 | 2,480 | 2,085 | → |
| Licenza | Commune | Roma | 964 | 955 | 957 | 1,012 | 892 | → |
| Longone Sabino | Commune | Rieti | 755 | 699 | 682 | 583 | 517 | → |
| Lubriano | Commune | Viterbo | 947 | 958 | 918 | 919 | 851 | → |
| Maenza | Commune | Latina | 2,695 | 3,048 | 3,017 | 3,078 | 2,929 | → |
| Magliano Romano | Commune | Roma | 1,030 | 1,096 | 1,322 | 1,470 | 1,383 | → |
| Magliano Sabina | Commune | Rieti | 3,577 | 3,702 | 3,745 | 3,799 | 3,443 | → |
| Mandela | Commune | Roma | 559 | 639 | 771 | 897 | 903 | → |
| Manziana | Commune | Roma | 3,986 | 5,228 | 5,857 | 7,082 | 7,765 | → |
| Marano Equo | Commune | Roma | 758 | 782 | 768 | 786 | 771 | → |
| Marcellina | Commune | Roma | 4,634 | 5,175 | 5,508 | 6,901 | 7,035 | → |
| Marcetelli | Commune | Rieti | 228 | 182 | 126 | 97 | 57 | → |
| Marino | Commune | Roma | 30,772 | 32,903 | 32,706 | 38,245 | 46,514 | → |
| Marta | Commune | Viterbo | 3,361 | 3,372 | 3,436 | 3,520 | 3,226 | → |
| Mazzano Romano | Commune | Roma | 1,831 | 2,182 | 2,536 | 3,056 | 2,932 | → |
| Mentana | Commune | Roma | 11,737 | 14,413 | 16,288 | 20,772 | 22,686 | → |
| Micigliano | Commune | Rieti | 210 | 149 | 140 | 131 | 112 | → |
| Minturno | Commune | Latina | 17,049 | 17,298 | 17,814 | 19,472 | 20,276 | → |
| Mompeo | Commune | Rieti | 604 | 581 | 563 | 534 | 518 | → |
| Montalto di Castro | Commune | Viterbo | 6,604 | 7,063 | 7,653 | 8,770 | 8,712 | → |
| Montasola | Commune | Rieti | 398 | 380 | 368 | 403 | 396 | → |
| Montebuono | Commune | Rieti | 939 | 899 | 913 | 917 | 801 | → |
| Monte Compatri | Commune | Roma | 6,318 | 7,166 | 8,121 | 11,234 | 11,824 | → |
| Montefiascone | Commune | Viterbo | 12,508 | 12,656 | 12,653 | 13,388 | 13,007 | → |
| Monteflavio | Commune | Roma | 1,398 | 1,376 | 1,372 | 1,399 | 1,164 | → |
| Montelanico | Commune | Roma | 1,775 | 1,878 | 1,920 | 2,152 | 2,030 | → |
| Monteleone Sabino | Commune | Rieti | 1,270 | 1,266 | 1,274 | 1,232 | 1,159 | → |
| Montelibretti | Commune | Roma | 4,758 | 4,846 | 4,823 | 5,213 | 5,139 | → |
| Montenero Sabino | Commune | Rieti | 429 | 373 | 345 | 295 | 267 | → |
| Monte Porzio Catone | Commune | Roma | 6,109 | 7,452 | 8,221 | 8,617 | 8,581 | → |
| Monte Romano | Commune | Viterbo | 1,957 | 1,950 | 1,939 | 2,007 | 1,889 | → |
| Monterosi | Commune | Viterbo | 1,324 | 1,751 | 2,381 | 3,868 | 4,790 | → |
| Monterotondo | Commune | Roma | 26,195 | 30,124 | 34,376 | 39,502 | 41,191 | → |
| Monte San Biagio | Commune | Latina | 5,629 | 5,856 | 5,996 | 6,144 | 6,053 | → |
| Monte San Giovanni Campano | Commune | Frosinone | 11,882 | 12,727 | 12,739 | 12,882 | 11,982 | → |
| Monte San Giovanni in Sabina | Commune | Rieti | 681 | 665 | 728 | 752 | 650 | → |
| Montopoli di Sabina | Commune | Rieti | 3,056 | 3,472 | 3,698 | 4,222 | 4,089 | → |
| Montorio Romano | Commune | Roma | 1,737 | 1,847 | 1,829 | 2,035 | 1,920 | → |
| Moricone | Commune | Roma | 2,139 | 2,307 | 2,354 | 2,683 | 2,440 | → |
| Morlupo | Commune | Roma | 4,591 | 5,611 | 6,654 | 8,122 | 8,513 | → |
| Morolo | Commune | Frosinone | 2,858 | 2,994 | 3,090 | 3,267 | 3,156 | → |
| Morro Reatino | Commune | Rieti | 437 | 367 | 377 | 356 | 340 | → |
| Nazzano | Commune | Roma | 1,014 | 1,135 | 1,251 | 1,361 | 1,341 | → |
| Nemi | Commune | Roma | 1,420 | 1,586 | 1,719 | 1,925 | 1,851 | → |
| Nepi | Commune | Viterbo | 5,335 | 6,346 | 7,827 | 9,353 | 9,471 | → |
| Nerola | Commune | Roma | 1,289 | 1,380 | 1,419 | 1,821 | 1,898 | → |
| Nespolo | Commune | Rieti | 330 | 283 | 224 | 274 | 199 | → |
| Nettuno | Commune | Roma | 29,423 | 33,827 | 36,080 | 45,460 | 48,297 | → |
| Norma | Commune | Latina | 3,484 | 3,600 | 3,792 | 4,035 | 3,669 | → |
| Olevano Romano | Commune | Roma | 5,898 | 6,000 | 6,354 | 6,742 | 6,374 | → |
| Onano | Commune | Viterbo | 1,505 | 1,278 | 1,169 | 1,017 | 884 | → |
| Oriolo Romano | Commune | Viterbo | 2,085 | 2,338 | 2,920 | 3,648 | 3,711 | → |
| Orte | Commune | Viterbo | 7,923 | 7,820 | 7,781 | 8,665 | 9,097 | → |
| Orvinio | Commune | Rieti | 424 | 456 | 427 | 448 | 392 | → |
| Paganico Sabino | Commune | Rieti | 251 | 196 | 180 | 172 | 156 | → |
| Palestrina | Commune | Roma | 13,386 | 15,802 | 17,234 | 20,498 | 22,158 | → |
| Paliano | Commune | Frosinone | 6,865 | 7,372 | 7,663 | 8,146 | 7,880 | → |
| Palombara Sabina | Commune | Roma | 7,649 | 8,726 | 10,659 | 12,167 | 12,997 | → |
| Pastena | Commune | Frosinone | 1,753 | 1,715 | 1,672 | 1,528 | 1,263 | → |
| Patrica | Commune | Frosinone | 2,460 | 2,738 | 2,915 | 3,084 | 3,064 | → |
| Percile | Commune | Roma | 295 | 271 | 216 | 277 | 221 | → |
| Pescorocchiano | Commune | Rieti | 3,140 | 2,738 | 2,553 | 2,211 | 1,827 | → |
| Pescosolido | Commune | Frosinone | 1,445 | 1,473 | 1,568 | 1,552 | 1,401 | → |
| Petrella Salto | Commune | Rieti | 2,005 | 1,608 | 1,326 | 1,212 | 1,027 | → |
| Piansano | Commune | Viterbo | 2,337 | 2,306 | 2,220 | 2,147 | 2,003 | → |
| Picinisco | Commune | Frosinone | 1,288 | 1,261 | 1,206 | 1,255 | 1,098 | → |
| Pico | Commune | Frosinone | 3,249 | 3,194 | 3,123 | 3,004 | 2,621 | → |
| Piedimonte San Germano | Commune | Frosinone | 4,151 | 4,668 | 4,481 | 6,036 | 6,304 | → |
| Piglio | Commune | Frosinone | 4,561 | 4,734 | 4,700 | 4,657 | 4,326 | → |
| Pignataro Interamna | Commune | Frosinone | 2,094 | 2,473 | 2,447 | 2,558 | 2,429 | → |
| Pisoniano | Commune | Roma | 780 | 810 | 734 | 803 | 729 | → |
| Pofi | Commune | Frosinone | 4,373 | 4,496 | 4,463 | 4,303 | 3,873 | → |
| Poggio Bustone | Commune | Rieti | 2,046 | 2,159 | 2,094 | 2,130 | 1,968 | → |
| Poggio Catino | Commune | Rieti | 1,023 | 1,103 | 1,220 | 1,335 | 1,273 | → |
| Poggio Mirteto | Commune | Rieti | 4,668 | 4,942 | 5,168 | 5,995 | 6,167 | → |
| Poggio Moiano | Commune | Rieti | 2,157 | 2,381 | 2,510 | 2,798 | 2,827 | → |
| Poggio Nativo | Commune | Rieti | 1,522 | 1,801 | 2,049 | 2,456 | 2,571 | → |
| Poggio San Lorenzo | Commune | Rieti | 446 | 516 | 523 | 580 | 550 | → |
| Poli | Commune | Roma | 1,939 | 2,025 | 2,163 | 2,433 | 2,202 | → |
| Pomezia | Commune | Roma | 29,925 | 37,512 | 43,960 | 56,372 | 64,617 | → |
| Pontecorvo | Commune | Frosinone | 12,419 | 13,064 | 13,280 | 13,223 | 12,198 | → |
| Pontinia | Commune | Latina | 10,927 | 12,203 | 13,027 | 13,812 | 15,075 | → |
| Ponza | Commune | Latina | 3,210 | 3,315 | 3,110 | 3,255 | 3,287 | → |
| Ponzano Romano | Commune | Roma | 890 | 906 | 1,028 | 1,158 | 1,270 | → |
| Posta | Commune | Rieti | 1,056 | 919 | 824 | 686 | 555 | → |
| Posta Fibreno | Commune | Frosinone | 1,393 | 1,365 | 1,274 | 1,217 | 1,021 | → |
| Pozzaglia Sabina | Commune | Rieti | 698 | 553 | 411 | 361 | 308 | → |
| Priverno | Commune | Latina | 12,655 | 13,289 | 13,133 | 13,891 | 13,794 | → |
| Proceno | Commune | Viterbo | 847 | 651 | 632 | 605 | 536 | → |
| Prossedi | Commune | Latina | 1,343 | 1,302 | 1,248 | 1,233 | 1,146 | → |
| Riano | Commune | Roma | 4,627 | 6,017 | 6,486 | 9,536 | 10,419 | → |
| Rieti | Commune | Rieti | 43,079 | 43,095 | 43,785 | 46,187 | 45,273 | → |
| Rignano Flaminio | Commune | Roma | 4,507 | 5,809 | 6,857 | 9,573 | 10,103 | → |
| Riofreddo | Commune | Roma | 673 | 713 | 764 | 762 | 756 | → |
| Ripi | Commune | Frosinone | 5,370 | 5,333 | 5,282 | 5,346 | 5,028 | → |
| Rivodutri | Commune | Rieti | 1,265 | 1,295 | 1,278 | 1,297 | 1,152 | → |
| Rocca Canterano | Commune | Roma | 310 | 279 | 251 | 207 | 173 | → |
| Rocca d'Arce | Commune | Frosinone | 985 | 1,059 | 1,031 | 971 | 873 | → |
| Rocca di Cave | Commune | Roma | 379 | 357 | 358 | 396 | 360 | → |
| Rocca di Papa | Commune | Roma | 8,956 | 11,142 | 13,014 | 15,576 | 17,833 | → |
| Roccagiovine | Commune | Roma | 230 | 272 | 297 | 280 | 244 | → |
| Roccagorga | Commune | Latina | 4,275 | 4,386 | 4,386 | 4,552 | 4,150 | → |
| Rocca Massima | Commune | Latina | 1,212 | 1,135 | 1,104 | 1,094 | 1,081 | → |
| Roccantica | Commune | Rieti | 577 | 549 | 631 | 605 | 542 | → |
| Rocca Priora | Commune | Roma | 6,391 | 8,456 | 10,002 | 10,819 | 12,024 | → |
| Rocca Santo Stefano | Commune | Roma | 1,086 | 1,014 | 1,009 | 1,028 | 912 | → |
| Roccasecca | Commune | Frosinone | 6,616 | 7,327 | 7,442 | 7,536 | 6,760 | → |
| Roccasecca dei Volsci | Commune | Latina | 1,136 | 1,201 | 1,201 | 1,126 | 1,049 | → |
| Rocca Sinibalda | Commune | Rieti | 911 | 943 | 825 | 853 | 778 | → |
| Roiate | Commune | Roma | 831 | 840 | 798 | 749 | 633 | → |
| Roma [Rome] | Commune | Roma | 2,805,109 | 2,733,908 | 2,546,804 | 2,617,175 | 2,754,719 | → |
| Ronciglione | Commune | Viterbo | 6,924 | 7,227 | 7,470 | 8,308 | 8,449 | → |
| Roviano | Commune | Roma | 1,396 | 1,470 | 1,386 | 1,392 | 1,244 | → |
| Sabaudia | Commune | Latina | 12,363 | 14,280 | 16,229 | 18,812 | 19,415 | → |
| Sacrofano | Commune | Roma | 3,301 | 4,475 | 5,691 | 6,668 | 7,410 | → |
| Salisano | Commune | Rieti | 542 | 541 | 552 | 558 | 481 | → |
| Sambuci | Commune | Roma | 696 | 819 | 891 | 936 | 832 | → |
| San Biagio Saracinisco | Commune | Frosinone | 478 | 438 | 365 | 361 | 294 | → |
| San Cesareo | Commune | Roma | 6,543 | 8,022 | 9,456 | 13,806 | 16,241 | → |
| San Donato Val di Comino | Commune | Frosinone | 2,408 | 2,316 | 2,192 | 2,122 | 1,860 | → |
| San Felice Circeo | Commune | Latina | 7,753 | 7,736 | 8,036 | 8,709 | 10,171 | → |
| San Giorgio a Liri | Commune | Frosinone | 2,888 | 3,092 | 3,067 | 3,166 | 2,972 | → |
| San Giovanni Incarico | Commune | Frosinone | 3,578 | 3,642 | 3,587 | 3,410 | 3,052 | → |
| San Gregorio da Sassola | Commune | Roma | 1,361 | 1,499 | 1,444 | 1,553 | 1,428 | → |
| San Lorenzo Nuovo | Commune | Viterbo | 2,039 | 2,059 | 2,067 | 2,166 | 2,020 | → |
| San Polo dei Cavalieri | Commune | Roma | 1,688 | 2,125 | 2,310 | 2,984 | 2,775 | → |
| Santa Marinella | Commune | Roma | 9,700 | 11,819 | 14,951 | 17,403 | 18,471 | → |
| Sant'Ambrogio sul Garigliano | Commune | Frosinone | 1,031 | 1,025 | 984 | 994 | 872 | → |
| Sant'Andrea del Garigliano | Commune | Frosinone | 1,714 | 1,705 | 1,589 | 1,566 | 1,272 | → |
| Sant'Angelo Romano | Commune | Roma | 2,176 | 2,525 | 3,078 | 4,488 | 4,983 | → |
| Sant'Apollinare | Commune | Frosinone | 1,855 | 2,038 | 1,950 | 1,931 | 1,813 | → |
| Sant'Elia Fiumerapido | Commune | Frosinone | 5,806 | 6,152 | 6,326 | 6,227 | 5,658 | → |
| Santi Cosma e Damiano | Commune | Latina | 4,980 | 6,298 | 6,532 | 6,882 | 6,841 | → |
| Santopadre | Commune | Frosinone | 1,886 | 1,751 | 1,649 | 1,410 | 1,168 | → |
| Sant'Oreste | Commune | Roma | 2,853 | 3,329 | 3,536 | 3,702 | 3,445 | → |
| San Vito Romano | Commune | Roma | 3,180 | 3,268 | 3,269 | 3,366 | 3,062 | → |
| San Vittore del Lazio | Commune | Frosinone | 2,303 | 2,442 | 2,674 | 2,679 | 2,353 | → |
| Saracinesco | Commune | Roma | 132 | 176 | 178 | 184 | 171 | → |
| Scandriglia | Commune | Rieti | 1,823 | 2,097 | 2,426 | 2,934 | 3,247 | → |
| Segni | Commune | Roma | 8,340 | 8,306 | 8,780 | 9,101 | 8,972 | → |
| Selci | Commune | Rieti | 972 | 937 | 1,000 | 1,106 | 1,144 | → |
| Sermoneta | Commune | Latina | 6,413 | 6,587 | 6,620 | 9,129 | 9,971 | → |
| Serrone | Commune | Frosinone | 2,751 | 2,887 | 2,943 | 3,069 | 2,955 | → |
| Settefrati | Commune | Frosinone | 880 | 874 | 855 | 792 | 717 | → |
| Sezze | Commune | Latina | 19,896 | 21,457 | 21,935 | 24,114 | 23,735 | → |
| Sgurgola | Commune | Frosinone | 2,456 | 2,463 | 2,556 | 2,623 | 2,367 | → |
| Sonnino | Commune | Latina | 6,764 | 6,953 | 7,043 | 7,279 | 7,367 | → |
| Sora | Commune | Frosinone | 25,675 | 26,089 | 26,029 | 26,247 | 24,825 | → |
| Soriano nel Cimino | Commune | Viterbo | 7,482 | 7,767 | 8,185 | 8,544 | 7,917 | → |
| Sperlonga | Commune | Latina | 3,592 | 3,400 | 3,102 | 3,334 | 3,041 | → |
| Spigno Saturnia | Commune | Latina | 2,057 | 2,460 | 2,719 | 2,903 | 2,869 | → |
| Stimigliano | Commune | Rieti | 1,672 | 1,829 | 1,744 | 2,241 | 2,192 | → |
| Strangolagalli | Commune | Frosinone | 2,380 | 2,536 | 2,503 | 2,501 | 2,277 | → |
| Subiaco | Commune | Roma | 8,897 | 9,004 | 9,030 | 9,066 | 8,533 | → |
| Supino | Commune | Frosinone | 4,534 | 4,749 | 4,783 | 4,893 | 4,590 | → |
| Sutri | Commune | Viterbo | 3,427 | 4,334 | 5,055 | 6,552 | 6,750 | → |
| Tarano | Commune | Rieti | 1,077 | 1,141 | 1,198 | 1,431 | 1,386 | → |
| Tarquinia | Commune | Viterbo | 13,176 | 14,020 | 15,162 | 16,016 | 15,985 | → |
| Terelle | Commune | Frosinone | 951 | 706 | 603 | 460 | 287 | → |
| Terracina | Commune | Latina | 36,840 | 37,077 | 36,633 | 44,233 | 44,651 | → |
| Tessennano | Commune | Viterbo | 470 | 472 | 420 | 350 | 283 | → |
| Tivoli | Commune | Roma | 50,985 | 52,372 | 49,342 | 52,910 | 55,201 | → |
| Toffia | Commune | Rieti | 758 | 829 | 905 | 1,002 | 1,074 | → |
| Tolfa | Commune | Roma | 4,899 | 4,942 | 4,942 | 5,147 | 4,716 | → |
| Torre Cajetani | Commune | Frosinone | 1,150 | 1,216 | 1,279 | 1,388 | 1,301 | → |
| Torrice | Commune | Frosinone | 4,605 | 4,370 | 4,356 | 4,608 | 4,679 | → |
| Torricella in Sabina | Commune | Rieti | 1,045 | 1,181 | 1,216 | 1,405 | 1,285 | → |
| Torri in Sabina | Commune | Rieti | 1,176 | 1,146 | 1,197 | 1,249 | 1,223 | → |
| Torrita Tiberina | Commune | Roma | 709 | 830 | 932 | 1,071 | 1,094 | → |
| Trevignano Romano | Commune | Roma | 2,717 | 3,443 | 4,583 | 5,274 | 5,833 | → |
| Trevi nel Lazio | Commune | Frosinone | 1,852 | 1,951 | 1,822 | 1,853 | 1,728 | → |
| Trivigliano | Commune | Frosinone | 1,258 | 1,349 | 1,430 | 1,693 | 1,609 | → |
| Turania | Commune | Rieti | 353 | 281 | 272 | 245 | 237 | → |
| Tuscania | Commune | Viterbo | 7,241 | 7,721 | 7,717 | 8,145 | 8,208 | → |
| Vacone | Commune | Rieti | 262 | 265 | 247 | 264 | 234 | → |
| Valentano | Commune | Viterbo | 2,880 | 2,923 | 2,935 | 2,895 | 2,783 | → |
| Vallecorsa | Commune | Frosinone | 3,622 | 3,489 | 3,115 | 2,800 | 2,401 | → |
| Vallemaio | Commune | Frosinone | 1,122 | 1,137 | 1,052 | 1,002 | 894 | → |
| Vallepietra | Commune | Roma | 488 | 398 | 376 | 306 | 233 | → |
| Vallerano | Commune | Viterbo | 2,310 | 2,446 | 2,505 | 2,613 | 2,390 | → |
| Vallerotonda | Commune | Frosinone | 2,194 | 2,072 | 1,854 | 1,671 | 1,386 | → |
| Vallinfreda | Commune | Roma | 288 | 290 | 290 | 317 | 292 | → |
| Valmontone | Commune | Roma | 10,278 | 11,649 | 12,244 | 14,975 | 15,755 | → |
| Varco Sabino | Commune | Rieti | 383 | 250 | 263 | 210 | 161 | → |
| Vasanello | Commune | Viterbo | 3,242 | 3,555 | 3,890 | 4,161 | 3,986 | → |
| Vejano | Commune | Viterbo | 1,623 | 1,938 | 2,085 | 2,298 | 2,138 | → |
| Velletri | Commune | Roma | 41,213 | 43,423 | 48,236 | 52,295 | 52,898 | → |
| Ventotene | Commune | Latina | 498 | 671 | 633 | 691 | 692 | → |
| Veroli | Commune | Frosinone | 18,265 | 19,229 | 19,818 | 20,763 | 19,532 | → |
| Vetralla | Commune | Viterbo | 10,538 | 11,573 | 11,917 | 13,507 | 13,361 | → |
| Vicalvi | Commune | Frosinone | 738 | 766 | 801 | 806 | 722 | → |
| Vico nel Lazio | Commune | Frosinone | 1,896 | 2,024 | 2,161 | 2,256 | 2,072 | → |
| Vicovaro | Commune | Roma | 3,757 | 3,819 | 3,714 | 3,937 | 3,540 | → |
| Vignanello | Commune | Viterbo | 4,880 | 4,724 | 4,705 | 4,826 | 4,299 | → |
| Villa Latina | Commune | Frosinone | 1,317 | 1,354 | 1,247 | 1,286 | 1,141 | → |
| Villa San Giovanni in Tuscia | Commune | Viterbo | 1,144 | 1,147 | 1,164 | 1,313 | 1,231 | → |
| Villa Santa Lucia | Commune | Frosinone | 2,180 | 2,386 | 2,622 | 2,639 | 2,477 | → |
| Villa Santo Stefano | Commune | Frosinone | 1,727 | 1,731 | 1,763 | 1,707 | 1,595 | → |
| Viterbo | Commune | Viterbo | 57,632 | 58,380 | 59,308 | 63,209 | 66,241 | → |
| Viticuso | Commune | Frosinone | 513 | 483 | 428 | 372 | 296 | → |
| Vitorchiano | Commune | Viterbo | 2,064 | 2,554 | 3,214 | 4,956 | 5,255 | → |
| Vivaro Romano | Commune | Roma | 317 | 242 | 223 | 177 | 153 | → |
| Zagarolo | Commune | Roma | 7,318 | 10,047 | 12,735 | 16,922 | 18,630 | → |
Source: Istituto Nazionale di Statistica Italia.
Explanation: The latest population figures are result of a sampling survey combined with an evaluation of registers.