| | Name | Adm. | CU C 1980-12-01 | CU E 2000-01-01 | CU E 2005-01-01 | CU E 2010-01-01 | CU E 2013-01-01 |
| i | Akranes | VUL | 5,200 | 5,340 | 5,657 | 6,549 | 6,612 |
| i | Akureyri | NUE | 13,420 | 15,143 | 16,308 | 17,295 | 17,693 |
| i | Álftanes {Alftanes} | HOF | 480 | 1,439 | 2,032 | 2,523 | 2,392 |
| i | Blönduós (Blönduóssbær) {Blonduos} | NUV | 934 | 924 | 851 | 819 | 813 |
| i | Bolungarvík {Bolungarvik} | VFJ | 1,266 | 1,001 | 930 | 970 | 894 |
| i | Borgarnes (Borgarbyggð) | VUL | 1,619 | 1,733 | 1,757 | 1,828 | 1,759 |
| i | Dalvík (Dalvíkurbyggð) {Dalvik} | NUE | 1,269 | 1,485 | 1,405 | 1,435 | 1,359 |
| i | Egilsstaðir (Fljótsdalshérað) {Egilsstadir} | AUU | 1,140 | 1,607 | 1,765 | 2,277 | 2,303 |
| i | Eskifjörður (Fjarðabyggð) {Eskifjordur} | AUU | 1,043 | 1,003 | 999 | 1,062 | 1,014 |
| i | Eyrarbakki (Árborg) | SUL | 559 | 543 | 575 | 565 | 531 |
| i | Fáskrúðsfjörður (Fjarðabyggð) {Faskrudsfjordur} | AUU | 760 | 585 | 614 | 667 | 654 |
| i | Garðabær {Gardabaer} | HOF | 4,909 | 7,937 | 9,053 | 10,643 | 11,421 |
| i | Garður {Gardur} | SDN | 912 | 1,183 | 1,329 | 1,515 | 1,429 |
| i | Grindavík (Grindavíkurbær) {Grindavik} | SDN | 1,929 | 2,242 | 2,494 | 2,837 | 2,856 |
| i | Grundarfjörður (Grundarfjarðarbær) {Grundarfjordur} | VUL | 680 | 855 | 850 | 832 | 852 |
| i | Grundarhverfi á Kjalarnesi (Reykjavík) {Grundarhverfi a Kjalarnesi} | HOF | ... | 331 | 544 | 520 | 528 |
| i | Hafnarfjörður {Hafnarfjordur} | HOF | 12,205 | 19,158 | 22,000 | 25,913 | 26,800 |
| i | Hella (Rangárþing ytra) | SUL | 523 | 592 | 681 | 785 | 784 |
| i | Höfn í Hornafirði (Hornafjörður) {Hofn i Hornafirdi} | AUU | 1,455 | 1,769 | 1,694 | 1,614 | 1,690 |
| i | Húsavík (Norðurþing) {Husavik} | NUE | 2,414 | 2,439 | 2,323 | 2,229 | 2,228 |
| i | Hvammstangi (Húnaþing vestra) | NUV | 591 | 590 | 576 | 579 | 546 |
| i | Hveragerði {Hveragerdi} | SUL | 1,254 | 1,760 | 2,021 | 2,291 | 2,288 |
| i | Hvolsvöllur (Rangárþing eystra) {Hvolsvollur} | SUL | 532 | 644 | 740 | 847 | 902 |
| i | Ísafjörður (Ísafjarðarbær) {Isafjordur} | VFJ | 3,352 | 2,828 | 2,785 | 2,677 | 2,624 |
| i | Keflavík og Njarðvík (Reykjanesbær) {Keflavik og Njardvik} | SDN | 8,630 | 10,512 | 10,832 | 13,972 | 14,153 |
| i | Kópavogur {Kopavogur} | HOF | 13,819 | 22,693 | 25,803 | 30,357 | 31,719 |
| i | Mosfellsbær | HOF | 2,753 | 5,648 | 6,613 | 8,346 | 8,651 |
| i | Neskaupstaður (Fjarðabyggð) {Neskaupstadur} | AUU | 1,683 | 1,458 | 1,411 | 1,451 | 1,466 |
| i | Ólafsfjörður (Fjallabyggð) {Olafsfjordur} | NUE | 1,195 | 1,076 | 979 | 852 | 790 |
| i | Ólafsvík (Snæfellsbæ) {Olafsvik} | VUL | 1,180 | 973 | 1,008 | 1,005 | 1,010 |
| i | Patreksfjörður (Vesturbyggð) {Patreksfjordur} | VUL | 1,032 | 779 | 663 | 640 | 651 |
| i | Reyðarfjörður (Fjarðabyggð) {Reydarfjordur} | AUU | 726 | 647 | 696 | 1,090 | 1,152 |
| i | Reykjavík {Reykjavik} | HOF | 83,766 | 109,268 | 113,022 | 117,505 | 118,918 |
| i | Sandgerði {Sandgerdi} | SDN | 1,124 | 1,325 | 1,398 | 1,710 | 1,546 |
| i | Sauðárkrókur (Skagafjörður) {Saudarkrokur} | NUV | 2,188 | 2,600 | 2,632 | 2,640 | 2,575 |
| i | Selfoss (Árborg) | SUL | 3,409 | 4,483 | 5,269 | 6,493 | 6,510 |
| i | Seltjarnarnes | HOF | 3,100 | 4,665 | 4,548 | 4,395 | 4,322 |
| i | Seyðisfjörður {Seydisfjordur} | AUU | 998 | 828 | 714 | 706 | 658 |
| i | Siglufjörður (Fjallabyggð) {Siglufjordur} | NUE | 2,003 | 1,557 | 1,392 | 1,214 | 1,190 |
| i | Skagaströnd {Skagastrond} | NUV | 649 | 615 | 558 | 519 | 501 |
| i | Stykkishólmur {Stykkisholmur} | VUL | 1,205 | 1,217 | 1,141 | 1,092 | 1,108 |
| i | Þorlákshöfn (Ölfus) {Þorlakshofn} | SUL | 1,010 | 1,319 | 1,356 | 1,565 | 1,489 |
| i | Vestmannaeyjar | SUL | 4,727 | 4,581 | 4,215 | 4,135 | 4,219 |
| i | Vogar | SDN | 447 | 639 | 847 | 1,122 | 1,029 |
| i | Vopnafjörður (Vopnafjarðarhreppur) {Vopnafjordur} | AUU | 665 | 612 | 570 | 540 | 543 |