All provinces in the Region of Latium (Lazio).
| Name | Status | Population census 1991-10-20 | Population census 2001-10-21 | Population census 2011-10-09 | |
|---|---|---|---|---|---|
| Frosinone | Province | 479,559 | 484,566 | 492,661 | o |
| Latina | Province | 476,282 | 491,230 | 544,732 | o |
| Rieti | Province | 144,942 | 147,410 | 155,164 | o |
| Roma [Rome] | Province | 3,761,067 | 3,700,424 | 3,997,465 | o |
| Viterbo | Province | 278,521 | 288,783 | 312,864 | o |
| Lazio [Latium] | Region | 5,140,371 | 5,112,413 | 5,502,886 |
All communes in the Region of Latium (Lazio).
| Name | Status | Province | Population census 1991-10-20 | Population census 2001-10-21 | Population census 2011-10-09 | |
|---|---|---|---|---|---|---|
| Accumoli | Commune | Rieti | 758 | 724 | 653 | o |
| Acquafondata | Commune | Frosinone | 371 | 316 | 282 | o |
| Acquapendente | Commune | Viterbo | 5,886 | 5,788 | 5,655 | o |
| Acuto | Commune | Frosinone | 1,826 | 1,857 | 1,910 | o |
| Affile | Commune | Roma | 1,639 | 1,644 | 1,552 | o |
| Agosta | Commune | Roma | 1,450 | 1,617 | 1,760 | o |
| Alatri | Commune | Frosinone | 25,038 | 27,068 | 28,609 | o |
| Albano Laziale | Commune | Roma | 31,399 | 33,692 | 38,433 | o |
| Allumiere | Commune | Roma | 4,273 | 4,187 | 4,133 | o |
| Alvito | Commune | Frosinone | 3,151 | 3,031 | 2,852 | o |
| Amaseno | Commune | Frosinone | 4,110 | 4,228 | 4,314 | o |
| Amatrice | Commune | Rieti | 3,042 | 2,807 | 2,646 | o |
| Anagni | Commune | Frosinone | 19,314 | 19,134 | 21,441 | o |
| Anguillara Sabazia | Commune | Roma | 10,083 | 14,236 | 18,575 | o |
| Anticoli Corrado | Commune | Roma | 940 | 910 | 942 | o |
| Antrodoco | Commune | Rieti | 3,011 | 2,845 | 2,704 | o |
| Anzio | Commune | Roma | 33,497 | 36,952 | 49,731 | o |
| Aprilia | Commune | Latina | 47,037 | 56,028 | 66,979 | o |
| Aquino | Commune | Frosinone | 5,386 | 5,337 | 5,309 | o |
| Arce | Commune | Frosinone | 6,174 | 6,029 | 5,783 | o |
| Arcinazzo Romano | Commune | Roma | 1,379 | 1,334 | 1,394 | o |
| Ardea | Commune | Roma | 16,854 | 26,711 | 44,202 | o |
| Ariccia | Commune | Roma | 16,953 | 17,865 | 18,311 | o |
| Arlena di Castro | Commune | Viterbo | 920 | 867 | 886 | o |
| Arnara | Commune | Frosinone | 2,515 | 2,454 | 2,379 | o |
| Arpino | Commune | Frosinone | 8,006 | 7,614 | 7,386 | o |
| Arsoli | Commune | Roma | 1,582 | 1,537 | 1,647 | o |
| Artena | Commune | Roma | 10,731 | 11,828 | 13,665 | o |
| Ascrea | Commune | Rieti | 318 | 284 | 266 | o |
| Atina | Commune | Frosinone | 4,692 | 4,484 | 4,461 | o |
| Ausonia | Commune | Frosinone | 2,501 | 2,563 | 2,650 | o |
| Bagnoregio | Commune | Viterbo | 3,857 | 3,639 | 3,674 | o |
| Barbarano Romano | Commune | Viterbo | 897 | 950 | 1,085 | o |
| Bassano in Teverina | Commune | Viterbo | 1,125 | 1,134 | 1,277 | o |
| Bassano Romano | Commune | Viterbo | 3,786 | 4,277 | 4,834 | o |
| Bassiano | Commune | Latina | 1,635 | 1,617 | 1,580 | o |
| Bellegra | Commune | Roma | 3,134 | 3,029 | 2,948 | o |
| Belmonte Castello | Commune | Frosinone | 781 | 765 | 778 | o |
| Belmonte in Sabina | Commune | Rieti | 627 | 617 | 649 | o |
| Blera | Commune | Viterbo | 3,193 | 3,208 | 3,356 | o |
| Bolsena | Commune | Viterbo | 4,064 | 4,111 | 4,137 | o |
| Bomarzo | Commune | Viterbo | 1,463 | 1,615 | 1,814 | o |
| Borbona | Commune | Rieti | 734 | 725 | 650 | o |
| Borgorose | Commune | Rieti | 4,630 | 4,524 | 4,615 | o |
| Borgo Velino | Commune | Rieti | 845 | 922 | 990 | o |
| Boville Ernica | Commune | Frosinone | 8,773 | 8,873 | 8,811 | o |
| Bracciano | Commune | Roma | 11,160 | 13,436 | 18,549 | o |
| Broccostella | Commune | Frosinone | 2,396 | 2,646 | 2,807 | o |
| Calcata | Commune | Viterbo | 886 | 846 | 905 | o |
| Camerata Nuova | Commune | Roma | 486 | 476 | 460 | o |
| Campagnano di Roma | Commune | Roma | 6,874 | 8,708 | 11,107 | o |
| Campodimele | Commune | Latina | 762 | 733 | 638 | o |
| Campoli Appennino | Commune | Frosinone | 1,815 | 1,804 | 1,749 | o |
| Canale Monterano | Commune | Roma | 2,698 | 3,298 | 4,071 | o |
| Canepina | Commune | Viterbo | 3,098 | 3,095 | 3,149 | o |
| Canino | Commune | Viterbo | 5,251 | 5,072 | 5,270 | o |
| Cantalice | Commune | Rieti | 2,753 | 2,875 | 2,726 | o |
| Cantalupo in Sabina | Commune | Rieti | 1,489 | 1,621 | 1,736 | o |
| Canterano | Commune | Roma | 401 | 372 | 359 | o |
| Capena | Commune | Roma | 4,875 | 5,826 | 9,488 | o |
| Capodimonte | Commune | Viterbo | 1,693 | 1,686 | 1,741 | o |
| Capranica | Commune | Viterbo | 4,776 | 5,604 | 6,644 | o |
| Capranica Prenestina | Commune | Roma | 307 | 334 | 330 | o |
| Caprarola | Commune | Viterbo | 4,913 | 5,197 | 5,345 | o |
| Carbognano | Commune | Viterbo | 2,012 | 1,918 | 2,042 | o |
| Carpineto Romano | Commune | Roma | 5,189 | 4,936 | 4,649 | o |
| Casalattico | Commune | Frosinone | 720 | 675 | 641 | o |
| Casalvieri | Commune | Frosinone | 3,216 | 3,211 | 2,867 | o |
| Casape | Commune | Roma | 812 | 746 | 737 | o |
| Casaprota | Commune | Rieti | 695 | 686 | 723 | o |
| Casperia | Commune | Rieti | 1,032 | 1,081 | 1,231 | o |
| Cassino | Commune | Frosinone | 32,787 | 32,762 | 33,658 | o |
| Castel di Tora | Commune | Rieti | 330 | 286 | 299 | o |
| Castelforte | Commune | Latina | 4,877 | 4,518 | 4,401 | o |
| Castel Gandolfo | Commune | Roma | 6,843 | 7,930 | 8,782 | o |
| Castelliri | Commune | Frosinone | 3,521 | 3,560 | 3,533 | o |
| Castel Madama | Commune | Roma | 6,407 | 6,415 | 7,328 | o |
| Castelnuovo di Farfa | Commune | Rieti | 823 | 929 | 1,047 | o |
| Castelnuovo di Porto | Commune | Roma | 5,897 | 7,181 | 8,059 | o |
| Castelnuovo Parano | Commune | Frosinone | 845 | 876 | 902 | o |
| Castel San Pietro Romano | Commune | Roma | 698 | 743 | 855 | o |
| Castel Sant'Angelo | Commune | Rieti | 1,320 | 1,282 | 1,289 | o |
| Castel Sant'Elia | Commune | Viterbo | 1,935 | 2,151 | 2,558 | o |
| Castiglione in Teverina | Commune | Viterbo | 2,321 | 2,261 | 2,385 | o |
| Castrocielo | Commune | Frosinone | 3,710 | 3,750 | 3,969 | o |
| Castro dei Volsci | Commune | Frosinone | 5,178 | 5,039 | 4,903 | o |
| Cave | Commune | Roma | 8,584 | 9,529 | 10,421 | o |
| Ceccano | Commune | Frosinone | 22,121 | 22,334 | 23,098 | o |
| Celleno | Commune | Viterbo | 1,271 | 1,339 | 1,343 | o |
| Cellere | Commune | Viterbo | 1,437 | 1,301 | 1,230 | o |
| Ceprano | Commune | Frosinone | 8,546 | 8,246 | 8,740 | o |
| Cerreto Laziale | Commune | Roma | 1,077 | 1,057 | 1,192 | o |
| Cervara di Roma | Commune | Roma | 495 | 471 | 472 | o |
| Cervaro | Commune | Frosinone | 6,680 | 7,022 | 7,744 | o |
| Cerveteri | Commune | Roma | 20,625 | 26,772 | 35,207 | o |
| Ciampino | Commune | Roma | 35,685 | 36,074 | 37,235 | o |
| Ciciliano | Commune | Roma | 1,073 | 1,133 | 1,353 | o |
| Cineto Romano | Commune | Roma | 537 | 612 | 641 | o |
| Cisterna di Latina | Commune | Latina | 31,463 | 32,584 | 35,551 | o |
| Cittaducale | Commune | Rieti | 6,434 | 6,542 | 6,900 | o |
| Cittareale | Commune | Rieti | 552 | 482 | 470 | o |
| Civita Castellana | Commune | Viterbo | 15,454 | 15,219 | 15,596 | o |
| Civitavecchia | Commune | Roma | 51,201 | 50,032 | 51,229 | o |
| Civitella d'Agliano | Commune | Viterbo | 1,765 | 1,734 | 1,658 | o |
| Civitella San Paolo | Commune | Roma | 1,386 | 1,547 | 1,754 | o |
| Colfelice | Commune | Frosinone | 1,917 | 1,853 | 1,853 | o |
| Collalto Sabino | Commune | Rieti | 539 | 497 | 440 | o |
| Colle di Tora | Commune | Rieti | 412 | 383 | 384 | o |
| Colleferro | Commune | Roma | 20,392 | 20,723 | 21,574 | o |
| Collegiove | Commune | Rieti | 201 | 176 | 169 | o |
| Collepardo | Commune | Frosinone | 867 | 928 | 975 | o |
| Colle San Magno | Commune | Frosinone | 895 | 819 | 744 | o |
| Collevecchio | Commune | Rieti | 1,462 | 1,480 | 1,595 | o |
| Colli sul Velino | Commune | Rieti | 462 | 516 | 524 | o |
| Colonna | Commune | Roma | 3,059 | 3,329 | 4,002 | o |
| Concerviano | Commune | Rieti | 461 | 386 | 311 | o |
| Configni | Commune | Rieti | 752 | 705 | 672 | o |
| Contigliano | Commune | Rieti | 3,142 | 3,408 | 3,601 | o |
| Corchiano | Commune | Viterbo | 3,067 | 3,337 | 3,740 | o |
| Coreno Ausonio | Commune | Frosinone | 1,876 | 1,738 | 1,671 | o |
| Cori | Commune | Latina | 10,257 | 10,529 | 11,025 | o |
| Cottanello | Commune | Rieti | 597 | 572 | 562 | o |
| Esperia | Commune | Frosinone | 4,380 | 4,131 | 3,903 | o |
| Fabrica di Roma | Commune | Viterbo | 5,231 | 6,654 | 8,136 | o |
| Faleria | Commune | Viterbo | 1,428 | 1,728 | 2,115 | o |
| Falvaterra | Commune | Frosinone | 587 | 630 | 567 | o |
| Fara in Sabina | Commune | Rieti | 9,319 | 10,810 | 12,326 | o |
| Farnese | Commune | Viterbo | 1,832 | 1,729 | 1,631 | o |
| Ferentino | Commune | Frosinone | 19,149 | 20,103 | 20,966 | o |
| Fiamignano | Commune | Rieti | 1,864 | 1,603 | 1,455 | o |
| Fiano Romano | Commune | Roma | 6,294 | 7,924 | 13,059 | o |
| Filacciano | Commune | Roma | 472 | 502 | 490 | o |
| Filettino | Commune | Frosinone | 614 | 550 | 551 | o |
| Fiuggi | Commune | Frosinone | 8,265 | 8,763 | 9,645 | o |
| Fiumicino | Commune | Roma | 41,342 | 50,535 | 67,626 | o |
| Fondi | Commune | Latina | 31,169 | 31,023 | 37,180 | o |
| Fontana Liri | Commune | Frosinone | 3,303 | 3,215 | 2,993 | o |
| Fontechiari | Commune | Frosinone | 1,287 | 1,288 | 1,318 | o |
| Fonte Nuova | Commune | Roma | 17,876 | 22,676 | 30,572 | o |
| Forano | Commune | Rieti | 2,364 | 2,453 | 2,933 | o |
| Formello | Commune | Roma | 7,574 | 9,271 | 11,909 | o |
| Formia | Commune | Latina | 34,957 | 34,931 | 36,331 | o |
| Frascati | Commune | Roma | 20,123 | 19,314 | 20,755 | o |
| Frasso Sabino | Commune | Rieti | 531 | 632 | 688 | o |
| Frosinone | Commune | Frosinone | 45,815 | 48,636 | 46,649 | o |
| Fumone | Commune | Frosinone | 2,093 | 2,153 | 2,180 | o |
| Gaeta | Commune | Latina | 22,334 | 21,179 | 20,762 | o |
| Gallese | Commune | Viterbo | 2,807 | 2,757 | 2,994 | o |
| Gallicano nel Lazio | Commune | Roma | 3,528 | 4,578 | 5,749 | o |
| Gallinaro | Commune | Frosinone | 1,159 | 1,221 | 1,246 | o |
| Gavignano | Commune | Roma | 1,606 | 1,760 | 1,956 | o |
| Genazzano | Commune | Roma | 5,065 | 5,314 | 5,959 | o |
| Genzano di Roma | Commune | Roma | 20,570 | 22,178 | 23,780 | o |
| Gerano | Commune | Roma | 1,133 | 1,201 | 1,248 | o |
| Giuliano di Roma | Commune | Frosinone | 2,239 | 2,228 | 2,343 | o |
| Gorga | Commune | Roma | 778 | 764 | 767 | o |
| Gradoli | Commune | Viterbo | 1,548 | 1,496 | 1,474 | o |
| Graffignano | Commune | Viterbo | 2,330 | 2,288 | 2,319 | o |
| Greccio | Commune | Rieti | 1,504 | 1,464 | 1,520 | o |
| Grottaferrata | Commune | Roma | 16,361 | 17,663 | 19,156 | o |
| Grotte di Castro | Commune | Viterbo | 3,187 | 2,967 | 2,795 | o |
| Guarcino | Commune | Frosinone | 1,691 | 1,662 | 1,658 | o |
| Guidonia Montecelio | Commune | Roma | 55,544 | 67,516 | 81,447 | o |
| Ischia di Castro | Commune | Viterbo | 2,609 | 2,464 | 2,377 | o |
| Isola del Liri | Commune | Frosinone | 12,794 | 12,191 | 11,963 | o |
| Itri | Commune | Latina | 7,949 | 8,749 | 10,460 | o |
| Jenne | Commune | Roma | 553 | 497 | 398 | o |
| Labico | Commune | Roma | 2,488 | 3,734 | 5,979 | o |
| Labro | Commune | Rieti | 293 | 352 | 344 | o |
| Ladispoli | Commune | Roma | 19,319 | 29,968 | 37,293 | o |
| Lanuvio | Commune | Roma | 8,177 | 9,994 | 13,006 | o |
| Lariano | Commune | Roma | 8,530 | 10,356 | 12,893 | o |
| Latera | Commune | Viterbo | 1,150 | 1,023 | 933 | o |
| Latina | Commune | Latina | 106,203 | 107,898 | 117,892 | o |
| Lenola | Commune | Latina | 4,087 | 4,131 | 4,155 | o |
| Leonessa | Commune | Rieti | 2,877 | 2,734 | 2,480 | o |
| Licenza | Commune | Roma | 955 | 957 | 1,012 | o |
| Longone Sabino | Commune | Rieti | 699 | 682 | 583 | o |
| Lubriano | Commune | Viterbo | 958 | 918 | 919 | o |
| Maenza | Commune | Latina | 3,048 | 3,017 | 3,078 | o |
| Magliano Romano | Commune | Roma | 1,096 | 1,322 | 1,470 | o |
| Magliano Sabina | Commune | Rieti | 3,702 | 3,745 | 3,799 | o |
| Mandela | Commune | Roma | 639 | 771 | 897 | o |
| Manziana | Commune | Roma | 5,228 | 5,857 | 7,082 | o |
| Marano Equo | Commune | Roma | 782 | 768 | 786 | o |
| Marcellina | Commune | Roma | 5,175 | 5,508 | 6,901 | o |
| Marcetelli | Commune | Rieti | 182 | 126 | 97 | o |
| Marino | Commune | Roma | 32,903 | 32,706 | 38,245 | o |
| Marta | Commune | Viterbo | 3,372 | 3,436 | 3,520 | o |
| Mazzano Romano | Commune | Roma | 2,182 | 2,536 | 3,056 | o |
| Mentana | Commune | Roma | 14,413 | 16,288 | 20,772 | o |
| Micigliano | Commune | Rieti | 149 | 140 | 131 | o |
| Minturno | Commune | Latina | 17,298 | 17,814 | 19,472 | o |
| Mompeo | Commune | Rieti | 581 | 563 | 534 | o |
| Montalto di Castro | Commune | Viterbo | 7,063 | 7,653 | 8,770 | o |
| Montasola | Commune | Rieti | 380 | 368 | 403 | o |
| Montebuono | Commune | Rieti | 899 | 913 | 917 | o |
| Monte Compatri | Commune | Roma | 7,166 | 8,121 | 11,234 | o |
| Montefiascone | Commune | Viterbo | 12,656 | 12,653 | 13,388 | o |
| Monteflavio | Commune | Roma | 1,376 | 1,372 | 1,399 | o |
| Montelanico | Commune | Roma | 1,878 | 1,920 | 2,152 | o |
| Monteleone Sabino | Commune | Rieti | 1,266 | 1,274 | 1,232 | o |
| Montelibretti | Commune | Roma | 4,846 | 4,823 | 5,213 | o |
| Montenero Sabino | Commune | Rieti | 373 | 345 | 295 | o |
| Monte Porzio Catone | Commune | Roma | 7,452 | 8,221 | 8,617 | o |
| Monte Romano | Commune | Viterbo | 1,950 | 1,939 | 2,007 | o |
| Monterosi | Commune | Viterbo | 1,751 | 2,381 | 3,868 | o |
| Monterotondo | Commune | Roma | 30,124 | 34,376 | 39,502 | o |
| Monte San Biagio | Commune | Latina | 5,856 | 5,996 | 6,144 | o |
| Monte San Giovanni Campano | Commune | Frosinone | 12,727 | 12,739 | 12,882 | o |
| Monte San Giovanni in Sabina | Commune | Rieti | 665 | 728 | 752 | o |
| Montopoli di Sabina | Commune | Rieti | 3,472 | 3,698 | 4,222 | o |
| Montorio Romano | Commune | Roma | 1,847 | 1,829 | 2,035 | o |
| Moricone | Commune | Roma | 2,307 | 2,354 | 2,683 | o |
| Morlupo | Commune | Roma | 5,611 | 6,654 | 8,122 | o |
| Morolo | Commune | Frosinone | 2,994 | 3,090 | 3,267 | o |
| Morro Reatino | Commune | Rieti | 367 | 377 | 356 | o |
| Nazzano | Commune | Roma | 1,135 | 1,251 | 1,361 | o |
| Nemi | Commune | Roma | 1,586 | 1,719 | 1,925 | o |
| Nepi | Commune | Viterbo | 6,346 | 7,827 | 9,353 | o |
| Nerola | Commune | Roma | 1,380 | 1,419 | 1,821 | o |
| Nespolo | Commune | Rieti | 283 | 224 | 274 | o |
| Nettuno | Commune | Roma | 33,827 | 36,080 | 45,460 | o |
| Norma | Commune | Latina | 3,600 | 3,792 | 4,035 | o |
| Olevano Romano | Commune | Roma | 6,000 | 6,354 | 6,742 | o |
| Onano | Commune | Viterbo | 1,278 | 1,169 | 1,017 | o |
| Oriolo Romano | Commune | Viterbo | 2,338 | 2,920 | 3,648 | o |
| Orte | Commune | Viterbo | 7,820 | 7,781 | 8,665 | o |
| Orvinio | Commune | Rieti | 456 | 427 | 448 | o |
| Paganico Sabino | Commune | Rieti | 196 | 180 | 172 | o |
| Palestrina | Commune | Roma | 15,802 | 17,234 | 20,498 | o |
| Paliano | Commune | Frosinone | 7,372 | 7,663 | 8,146 | o |
| Palombara Sabina | Commune | Roma | 8,726 | 10,659 | 12,167 | o |
| Pastena | Commune | Frosinone | 1,715 | 1,672 | 1,528 | o |
| Patrica | Commune | Frosinone | 2,738 | 2,915 | 3,084 | o |
| Percile | Commune | Roma | 271 | 216 | 277 | o |
| Pescorocchiano | Commune | Rieti | 2,738 | 2,553 | 2,211 | o |
| Pescosolido | Commune | Frosinone | 1,473 | 1,568 | 1,552 | o |
| Petrella Salto | Commune | Rieti | 1,608 | 1,326 | 1,212 | o |
| Piansano | Commune | Viterbo | 2,306 | 2,220 | 2,147 | o |
| Picinisco | Commune | Frosinone | 1,261 | 1,206 | 1,255 | o |
| Pico | Commune | Frosinone | 3,194 | 3,123 | 3,004 | o |
| Piedimonte San Germano | Commune | Frosinone | 4,668 | 4,481 | 6,036 | o |
| Piglio | Commune | Frosinone | 4,734 | 4,700 | 4,657 | o |
| Pignataro Interamna | Commune | Frosinone | 2,473 | 2,447 | 2,558 | o |
| Pisoniano | Commune | Roma | 810 | 734 | 803 | o |
| Pofi | Commune | Frosinone | 4,496 | 4,463 | 4,303 | o |
| Poggio Bustone | Commune | Rieti | 2,159 | 2,094 | 2,130 | o |
| Poggio Catino | Commune | Rieti | 1,103 | 1,220 | 1,335 | o |
| Poggio Mirteto | Commune | Rieti | 4,942 | 5,168 | 5,995 | o |
| Poggio Moiano | Commune | Rieti | 2,381 | 2,510 | 2,798 | o |
| Poggio Nativo | Commune | Rieti | 1,801 | 2,049 | 2,456 | o |
| Poggio San Lorenzo | Commune | Rieti | 516 | 523 | 580 | o |
| Poli | Commune | Roma | 2,025 | 2,163 | 2,433 | o |
| Pomezia | Commune | Roma | 37,512 | 43,960 | 56,372 | o |
| Pontecorvo | Commune | Frosinone | 13,064 | 13,280 | 13,223 | o |
| Pontinia | Commune | Latina | 12,203 | 13,027 | 13,812 | o |
| Ponza | Commune | Latina | 3,315 | 3,110 | 3,255 | o |
| Ponzano Romano | Commune | Roma | 906 | 1,028 | 1,158 | o |
| Posta | Commune | Rieti | 919 | 824 | 686 | o |
| Posta Fibreno | Commune | Frosinone | 1,365 | 1,274 | 1,217 | o |
| Pozzaglia Sabina | Commune | Rieti | 553 | 411 | 361 | o |
| Priverno | Commune | Latina | 13,289 | 13,133 | 13,891 | o |
| Proceno | Commune | Viterbo | 651 | 632 | 605 | o |
| Prossedi | Commune | Latina | 1,302 | 1,248 | 1,233 | o |
| Riano | Commune | Roma | 6,017 | 6,486 | 9,536 | o |
| Rieti | Commune | Rieti | 43,095 | 43,785 | 46,187 | o |
| Rignano Flaminio | Commune | Roma | 5,809 | 6,857 | 9,573 | o |
| Riofreddo | Commune | Roma | 713 | 764 | 762 | o |
| Ripi | Commune | Frosinone | 5,333 | 5,282 | 5,346 | o |
| Rivodutri | Commune | Rieti | 1,295 | 1,278 | 1,297 | o |
| Rocca Canterano | Commune | Roma | 279 | 251 | 207 | o |
| Rocca d'Arce | Commune | Frosinone | 1,059 | 1,031 | 971 | o |
| Rocca di Cave | Commune | Roma | 357 | 358 | 396 | o |
| Rocca di Papa | Commune | Roma | 11,142 | 13,014 | 15,576 | o |
| Roccagiovine | Commune | Roma | 272 | 297 | 280 | o |
| Roccagorga | Commune | Latina | 4,386 | 4,386 | 4,552 | o |
| Rocca Massima | Commune | Latina | 1,135 | 1,104 | 1,094 | o |
| Roccantica | Commune | Rieti | 549 | 631 | 605 | o |
| Rocca Priora | Commune | Roma | 8,456 | 10,002 | 10,819 | o |
| Rocca Santo Stefano | Commune | Roma | 1,014 | 1,009 | 1,028 | o |
| Roccasecca | Commune | Frosinone | 7,327 | 7,442 | 7,536 | o |
| Roccasecca dei Volsci | Commune | Latina | 1,201 | 1,201 | 1,126 | o |
| Rocca Sinibalda | Commune | Rieti | 943 | 825 | 853 | o |
| Roiate | Commune | Roma | 840 | 798 | 749 | o |
| Roma [Rome] | Commune | Roma | 2,733,908 | 2,546,804 | 2,617,175 | o |
| Ronciglione | Commune | Viterbo | 7,227 | 7,470 | 8,308 | o |
| Roviano | Commune | Roma | 1,470 | 1,386 | 1,392 | o |
| Sabaudia | Commune | Latina | 14,280 | 16,229 | 18,812 | o |
| Sacrofano | Commune | Roma | 4,475 | 5,691 | 6,668 | o |
| Salisano | Commune | Rieti | 541 | 552 | 558 | o |
| Sambuci | Commune | Roma | 819 | 891 | 936 | o |
| San Biagio Saracinisco | Commune | Frosinone | 438 | 365 | 361 | o |
| San Cesareo | Commune | Roma | 8,022 | 9,456 | 13,806 | o |
| San Donato Val di Comino | Commune | Frosinone | 2,316 | 2,192 | 2,122 | o |
| San Felice Circeo | Commune | Latina | 7,736 | 8,036 | 8,709 | o |
| San Giorgio a Liri | Commune | Frosinone | 3,092 | 3,067 | 3,166 | o |
| San Giovanni Incarico | Commune | Frosinone | 3,642 | 3,587 | 3,410 | o |
| San Gregorio da Sassola | Commune | Roma | 1,499 | 1,444 | 1,553 | o |
| San Lorenzo Nuovo | Commune | Viterbo | 2,059 | 2,067 | 2,166 | o |
| San Polo dei Cavalieri | Commune | Roma | 2,125 | 2,310 | 2,984 | o |
| Santa Marinella | Commune | Roma | 11,819 | 14,951 | 17,403 | o |
| Sant'Ambrogio sul Garigliano | Commune | Frosinone | 1,025 | 984 | 994 | o |
| Sant'Andrea del Garigliano | Commune | Frosinone | 1,705 | 1,589 | 1,566 | o |
| Sant'Angelo Romano | Commune | Roma | 2,525 | 3,078 | 4,488 | o |
| Sant'Apollinare | Commune | Frosinone | 2,038 | 1,950 | 1,931 | o |
| Sant'Elia Fiumerapido | Commune | Frosinone | 6,152 | 6,326 | 6,227 | o |
| Santi Cosma e Damiano | Commune | Latina | 6,298 | 6,532 | 6,882 | o |
| Santopadre | Commune | Frosinone | 1,751 | 1,649 | 1,410 | o |
| Sant'Oreste | Commune | Roma | 3,329 | 3,536 | 3,702 | o |
| San Vito Romano | Commune | Roma | 3,268 | 3,269 | 3,366 | o |
| San Vittore del Lazio | Commune | Frosinone | 2,442 | 2,674 | 2,679 | o |
| Saracinesco | Commune | Roma | 176 | 178 | 184 | o |
| Scandriglia | Commune | Rieti | 2,097 | 2,426 | 2,934 | o |
| Segni | Commune | Roma | 8,306 | 8,780 | 9,101 | o |
| Selci | Commune | Rieti | 937 | 1,000 | 1,106 | o |
| Sermoneta | Commune | Latina | 6,587 | 6,620 | 9,129 | o |
| Serrone | Commune | Frosinone | 2,887 | 2,943 | 3,069 | o |
| Settefrati | Commune | Frosinone | 874 | 855 | 792 | o |
| Sezze | Commune | Latina | 21,457 | 21,935 | 24,114 | o |
| Sgurgola | Commune | Frosinone | 2,463 | 2,556 | 2,623 | o |
| Sonnino | Commune | Latina | 6,953 | 7,043 | 7,279 | o |
| Sora | Commune | Frosinone | 26,089 | 26,029 | 26,247 | o |
| Soriano nel Cimino | Commune | Viterbo | 7,767 | 8,185 | 8,544 | o |
| Sperlonga | Commune | Latina | 3,400 | 3,102 | 3,334 | o |
| Spigno Saturnia | Commune | Latina | 2,460 | 2,719 | 2,903 | o |
| Stimigliano | Commune | Rieti | 1,829 | 1,744 | 2,241 | o |
| Strangolagalli | Commune | Frosinone | 2,536 | 2,503 | 2,501 | o |
| Subiaco | Commune | Roma | 9,004 | 9,030 | 9,066 | o |
| Supino | Commune | Frosinone | 4,749 | 4,783 | 4,893 | o |
| Sutri | Commune | Viterbo | 4,334 | 5,055 | 6,552 | o |
| Tarano | Commune | Rieti | 1,141 | 1,198 | 1,431 | o |
| Tarquinia | Commune | Viterbo | 14,020 | 15,162 | 16,016 | o |
| Terelle | Commune | Frosinone | 706 | 603 | 460 | o |
| Terracina | Commune | Latina | 37,077 | 36,633 | 44,233 | o |
| Tessennano | Commune | Viterbo | 472 | 420 | 350 | o |
| Tivoli | Commune | Roma | 52,372 | 49,342 | 52,910 | o |
| Toffia | Commune | Rieti | 829 | 905 | 1,002 | o |
| Tolfa | Commune | Roma | 4,942 | 4,942 | 5,147 | o |
| Torre Cajetani | Commune | Frosinone | 1,216 | 1,279 | 1,388 | o |
| Torrice | Commune | Frosinone | 4,370 | 4,356 | 4,608 | o |
| Torricella in Sabina | Commune | Rieti | 1,181 | 1,216 | 1,405 | o |
| Torri in Sabina | Commune | Rieti | 1,146 | 1,197 | 1,249 | o |
| Torrita Tiberina | Commune | Roma | 830 | 932 | 1,071 | o |
| Trevignano Romano | Commune | Roma | 3,443 | 4,583 | 5,274 | o |
| Trevi nel Lazio | Commune | Frosinone | 1,951 | 1,822 | 1,853 | o |
| Trivigliano | Commune | Frosinone | 1,349 | 1,430 | 1,693 | o |
| Turania | Commune | Rieti | 281 | 272 | 245 | o |
| Tuscania | Commune | Viterbo | 7,721 | 7,717 | 8,145 | o |
| Vacone | Commune | Rieti | 265 | 247 | 264 | o |
| Valentano | Commune | Viterbo | 2,923 | 2,935 | 2,895 | o |
| Vallecorsa | Commune | Frosinone | 3,489 | 3,115 | 2,800 | o |
| Vallemaio | Commune | Frosinone | 1,137 | 1,052 | 1,002 | o |
| Vallepietra | Commune | Roma | 398 | 376 | 306 | o |
| Vallerano | Commune | Viterbo | 2,446 | 2,505 | 2,613 | o |
| Vallerotonda | Commune | Frosinone | 2,072 | 1,854 | 1,671 | o |
| Vallinfreda | Commune | Roma | 290 | 290 | 317 | o |
| Valmontone | Commune | Roma | 11,649 | 12,244 | 14,975 | o |
| Varco Sabino | Commune | Rieti | 250 | 263 | 210 | o |
| Vasanello | Commune | Viterbo | 3,555 | 3,890 | 4,161 | o |
| Vejano | Commune | Viterbo | 1,938 | 2,085 | 2,298 | o |
| Velletri | Commune | Roma | 43,423 | 48,236 | 52,295 | o |
| Ventotene | Commune | Latina | 671 | 633 | 691 | o |
| Veroli | Commune | Frosinone | 19,229 | 19,818 | 20,763 | o |
| Vetralla | Commune | Viterbo | 11,573 | 11,917 | 13,507 | o |
| Vicalvi | Commune | Frosinone | 766 | 801 | 806 | o |
| Vico nel Lazio | Commune | Frosinone | 2,024 | 2,161 | 2,256 | o |
| Vicovaro | Commune | Roma | 3,819 | 3,714 | 3,937 | o |
| Vignanello | Commune | Viterbo | 4,724 | 4,705 | 4,826 | o |
| Villa Latina | Commune | Frosinone | 1,354 | 1,247 | 1,286 | o |
| Villa San Giovanni in Tuscia | Commune | Viterbo | 1,147 | 1,164 | 1,313 | o |
| Villa Santa Lucia | Commune | Frosinone | 2,386 | 2,622 | 2,639 | o |
| Villa Santo Stefano | Commune | Frosinone | 1,731 | 1,763 | 1,707 | o |
| Viterbo | Commune | Viterbo | 58,380 | 59,308 | 63,209 | o |
| Viticuso | Commune | Frosinone | 483 | 428 | 372 | o |
| Vitorchiano | Commune | Viterbo | 2,554 | 3,214 | 4,956 | o |
| Vivaro Romano | Commune | Roma | 242 | 223 | 177 | o |
| Zagarolo | Commune | Roma | 10,047 | 12,735 | 16,922 | o |
Source: Istituto Nazionale di Statistica Italia (web).
2013-01-15WWW.CITYPOPULATION.DE