Most municipalities in Iceland include more than one settlement.^[1] For example, four localities (Selfoss, Stokkseyri, Eyrarbakki, and Tjarnabyggð) can all be found in the municipality of Árborg.

A number of municipalities only contain a single locality, while there are also a few municipalities in which no localities exist. All localities in Iceland can only be located within a single municipality, i.e. they cannot straddle multiple municipality borders.^[2] Some municipalities, such as Hafnarfjörður and Akranes, also share the same name with a locality. However, these localities are not always situated in their namesake municipalities. In those cases, this does not necessarily mean that they there are no other localities included in that particular municipality. Even when they are the only locality there, they do not always encompass the span of that municipality's entire land area.^[3]

The majority of the functions that are carried out by local governments actually happen at the municipal level. However, most settlements in Iceland are broken down further into the "locality" level, which are mainly used for information collection and statistical analysis purposes only—they are the regional equivalent of a census division.

More information Rank, Name ...

Rank	Name	Population (2013)	Population (2018)[4]	Change (since 2013)	Municipality[5]	Region[6]
1	Reykjavík	118,918	124,847	5%	Reykjavík	Höfuðborgarsvæðið
2	Kópavogur	31,719	35,966	13.4%	Kópavogur	Höfuðborgarsvæðið
3	Hafnarfjörður	26,800	29,409	9.7%	Hafnarfjörður	Höfuðborgarsvæðið
4	Akureyri	17,693	18,542	4.8%	Akureyri	Norðurland eystra
5	Reykjanesbær	14,153	17,555	24%	Reykjanesbær	Suðurnes
6	Garðabær	11,421	12,912	13.1%	Garðabær	Höfuðborgarsvæðið
7	Mosfellsbær	8,651	10,225	18.2%	Mosfellsbær	Höfuðborgarsvæðið
8	Selfoss	6,510	7,564	16.2%	Árborg	Suðurland
9	Akranes	6,612	7,249	9.6%	Akranes	Vesturland
10	Seltjarnarnes	4,322	4,575	5.9%	Seltjarnarnes	Höfuðborgarsvæðið
11	Vestmannaeyjar	4,219	4,284	1.5%	Vestmannaeyjar	Suðurland
12	Grindavík	2,856	3,319	16.2%	Grindavíkurbær	Suðurnes
13	Ísafjörður	2,624	2,625	0%	Ísafjarðarbær	Vestfirðir
14	Álftanes	2,392	2,586	8.1%	Garðabær	Höfuðborgarsvæðið
15	Sauðárkrókur	2,575	2,574	0%	Skagafjörður	Norðurland vestra
16	Hveragerði	2,288	2,564	12.1%	Hveragerði	Suðurland
17	Egilsstaðir	2,303	2,464	7%	Múlaþing	Austurland
18	Húsavík	2,228	2,323	4.3%	Norðurþing	Norðurland eystra
19	Borgarnes	1,759	1,962	11.5%	Borgarbyggð	Vesturland
20	Sandgerði	1,546	1,753	13.4%	Suðurnesjabær	Suðurnes
21	Höfn	1,690	1,677	0.8%	Hornafjörður	Austurland
22	Þorlákshöfn	1,489	1,651	10.9%	Ölfus	Suðurland
23	Garður	1,429	1,595	11.6%	Suðurnesjabær	Suðurnes
24	Neskaupstaður	1,466	1,469	0.2%	Fjarðabyggð	Austurland
25	Dalvík	1,359	1,367	0.6%	Dalvíkurbyggð	Norðurland eystra
26	Reyðarfjörður	1,152	1,270	10.2%	Fjarðabyggð	Austurland
27	Siglufjörður	1,190	1,183	0.6%	Fjallabyggð	Norðurland eystra
28	Vogar	1,029	1,183	15%	Vogar	Suðurnes
29	Stykkishólmur	1,108	1,173	5.9%	Stykkishólmur	Vesturland
30	Eskifjörður	1,014	1,006	0.8%	Fjarðabyggð	Austurland
31	Ólafsvík	1,010	970	4%	Snæfellsbær	Vesturland
32	Hvolsvöllur	902	931	3.2%	Rangárþing eystra	Suðurland
33	Bolungarvík	894	924	3.4%	Bolungarvík	Vestfirðir
34	Hella	784	861	9.8%	Rangárþing ytra	Suðurland
35	Grundarfjörður	852	834	2.1%	Grundarfjarðarbær	Vesturland
36	Blönduós	813	821	1%	Blönduósbær	Norðurland vestra
37	Ólafsfjörður	790	791	0.1%	Fjallabyggð	Norðurland eystra
38	Fáskrúðsfjörður	654	712	8.9%	Fjarðabyggð	Austurland
39	Patreksfjörður	651	677	4%	Vesturbyggð	Vestfirðir
40	Seyðisfjörður	658	663	0.8%	Múlaþing	Austurland
41	Grundarhverfi	528	587	11.2%	Reykjavík	Höfuðborgarsvæðið
42	Hvammstangi	546	578	5.9%	Húnaþing vestra	Norðurland vestra
43	Stokkseyri	465	528	13.5%	Árborg	Suðurland
44	Eyrarbakki	531	526	0.9%	Árborg	Suðurland
45	Vopnafjörður	543	526	3.1%	Vopnafjarðarhreppur	Austurland
46	Skagaströnd	501	477	4.8%	Skagaströnd	Norðurland vestra
47	Flúðir	420	432	2.9%	Hrunamannahreppur	Suðurland
48	Vík	276	402	45.7%	Mýrdalshreppur	Suðurland
49	Fellabær	403	395	2%	Múlaþing	Austurland
50	Hellissandur	389	365	6.2%	Snæfellsbær	Vesturland
51	Djúpivogur	348	357	2.6%	Múlaþing	Austurland
52	Þórshöfn	379	352	7.1%	Langanesbyggð	Norðurland eystra
53	Svalbarðseyri	271	337	24.4%	Svalbarðsstrandarhreppur	Norðurland eystra
54	Hólmavík	391	320	18.2%	Strandabyggð	Vestfirðir
55	Grenivík	278	297	6.8%	Grýtubakkahreppur	Norðurland eystra
56	Hvanneyri	251	285	13.5%	Borgarbyggð	Vesturland
57	Þingeyri	262	276	5.3%	Ísafjarðarbær	Vestfirðir
58	Búðardalur	252	272	7.9%	Dalabyggð	Vesturland
59	Reykholt	206	270	31.1%	Bláskógabyggð	Suðurland
60	Hrafnagil	263	257	2.3%	Eyjafjarðarsveit	Norðurland eystra
61	Suðureyri	264	257	2.7%	Ísafjarðarbær	Vestfirðir
62	Tálknafjörður	275	231	16%	Tálknafjarðarhreppur	Vestfirðir
63	Bíldudalur	170	225	32.4%	Vesturbyggð	Vestfirðir
64	Mosfellsdalur	203	224	10.3%	Mosfellsbær	Höfuðborgarsvæðið
65	Hnífsdalur	216	208	3.7%	Ísafjarðarbær	Vestfirðir
66	Reykjahlíð	153	208	35.9%	Skútustaðahreppur	Norðurland eystra
67	Laugarvatn	147	191	29.9%	Bláskógabyggð	Suðurland
68	Raufarhöfn	169	186	10.1%	Norðurþing	Norðurland eystra
69	Stöðvarfjörður	189	184	2.6%	Fjarðabyggð	Austurland
70	Bifröst	246	179	27.2%	Borgarbyggð	Vesturland
71	Flateyri	199	177	11.1%	Ísafjarðarbær	Vestfirðir
72	Kirkjubæjarklaustur	119	176	47.9%	Skaftárhreppur	Suðurland
73	Súðavík	145	157	8.3%	Súðavíkurhreppur	Vestfirðir
74	Hrísey	171	151	11.7%	Akureyri	Norðurland eystra
75	Hofsós	181	147	18.8%	Skagafjörður	Norðurland vestra
76	Breiðdalsvík	130	137	5.4%	Fjarðabyggð	Austurland
77	Rif	163	135	17.2%	Snæfellsbær	Vesturland
78	Reykhólar	133	130	2.3%	Reykhólahreppur	Vestfirðir
79	Varmahlíð	128	127	0.8%	Skagafjörður	Norðurland vestra
80	Kópasker	122	122	0%	Norðurþing	Norðurland eystra
81	Laugarás	106	116	9.4%	Bláskógabyggð	Suðurland
82	Borg	75	112	49.3%	Grafningshreppur	Suðurland
83	Hauganes	105	111	5.7%	Dalvíkurbyggð	Norðurland eystra
84	Hafnir	76	110	44.7%	Reykjanesbær	Suðurnes
85	Laugar	111	109	1.8%	Þingeyjarsveit	Norðurland eystra
86	Melahverfi	115	107	7%	Hvalfjarðarsveit	Vesturland
87	Tjarnabyggð	81	106	30.9%	Árborg	Suðurland
88	Árskógssandur	112	102	8.9%	Dalvíkurbyggð	Norðurland eystra
89	Lónsbakki	104	102	1.9%	Hörgársveit	Norðurland eystra
90	Hólar	78	94	20.5%	Skagafjörður	Norðurland vestra
91	Nesjahverfi	71	92	29.6%	Hornafjörður	Austurland
92	Sólheimar	95	91	4.2%	Grafningshreppur	Suðurland
93	Brúnahlíð	62	85	37.1%	Eyjafjarðarsveit	Norðurland eystra
94	Drangsnes	69	77	11.6%	Kaldrananeshreppur	Vestfirðir
95	Borgarfjörður eystri	86	76	11.6%	Borgarfjarðarhreppur	Austurland
96	Árbæjarhverfi	54	74	37%	Ölfus	Suðurland
97	Brautarholt	54	70	29.6%	Gnúpverjahreppur	Suðurland
98	Rauðalækur	36	68	88.9%	Rangárþing ytra	Suðurland
99	Bakkafjörður	78	65	16.7%	Langanesbyggð	Norðurland eystra
100	Innnes	56	65	16.1%	Hvalfjarðarsveit	Vesturland
101	Grímsey	76	61	19.7%	Akureyri	Norðurland eystra
102	Þykkvabær	53	59	11.3%	Rangárþing ytra	Suðurland
103	Laugarbakki	48	57	18.8%	Húnaþing vestra	Norðurland vestra
104	Reykholt	36	56	55.6%	Borgarbyggð	Vesturland
105	Árnes	37	53	43.2%	Gnúpverjahreppur	Suðurland
106	Kristnes	56	52	7.1%	Eyjafjarðarsveit	Norðurland eystra
107	Kleppjárnsreykir	51	43	15.7%	Borgarbyggð	Vesturland

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