The Atlas

Municipalities in Ilocos Region

A municipality is a local government made up of barangays, led by a mayor, a vice mayor and the Sangguniang Bayan, the municipal council.^[1] Only Congress can create one, by law, approved in a plebiscite. The law asks for an income of ₱2.5 million a year, 25,000 people and 50 km² of land.^[1]

A municipality that grows can become a component city by law, once it earns ₱100 million a year and has 100 km² of land or 150,000 people.^{[1, 2]}

Open Ilocos Region

Municipalities in Ilocos Region, at a glance

Municipalities: 116^[3]
People, 2024CensusA count of every person in the country, all on one day. The 2024 census counted people as they were on 1 July 2024.More in the glossary: 4,303,461^[4]
Land areaLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.More in the glossary: 11,899.51 km²^[5]; Each municipality's official area, added up.
Most people: Malasiqui^[4]; Pangasinan; 144,344 people
Fewest people: Carasi^[4]; Ilocos Norte; 1,775 people
Largest by landLand areaThe land inside the place's official boundary. A square kilometre is a square 1 km on each side, about the size of 140 football fields.More in the glossary: Vintar^[5]; Ilocos Norte; 539.20 km²
Most crowdedPopulation densityHow crowded a place is on average: its people divided by its land area. 1,000 people per square kilometre is 10 people per hectare, a square of 100 by 100 metres.More in the glossary: Currimao^[5]; Ilocos Norte; 11,672 people per km²
Fastest growing, 10,000 people or moreGrowth a yearHow fast the number of people changed each year between two censuses. 1% a year means about 1 more person for every 100 people, each year.More in the glossary: Nueva Era^[4]; Ilocos Norte; 2.57% a year, 2020 to 2024
Fewer people than in 2020Growth a yearHow fast the number of people changed each year between two censuses. 1% a year means about 1 more person for every 100 people, each year.More in the glossary: 19 municipalities^[4]; Of those with 10,000 people or more, the steepest fall: Paoay, −0.77% a year.

Island group: Luzon

Region: Ilocos Region

Province: All

Sort: Most people

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Each row is a municipality, with its 2024 census figures. Choose a column heading or a sort button to order the list, and choose it again to turn the order round. Narrow it with the menus.

116 municipalities, 1 to 50 shown, most people first.

Municipalities in Ilocos Region, most people
Rank	Name	People, 2024	People per km²	Land area	Growth, 2020–2024
1	MalasiquiPangasinan	144,344	1,124	128.38 km²	0.21% a year
2	BayambangPangasinan	129,506	904	143.18 km²	0.09% a year
3	MangaldanPangasinan	113,302	2,370	47.80 km²	0.02% a year
4	LingayenPangasinan	108,510	1,717	63.20 km²	0.17% a year
5	CalasiaoPangasinan	100,686	2,067	48.70 km²	0.05% a year
6	Santa BarbaraPangasinan	92,420	1,340	68.95 km²	0.06% a year
7	BinmaleyPangasinan	88,006	1,431	61.48 km²	0.31% a year
8	San FabianPangasinan	87,714	1,124	78.03 km²	0.08% a year
9	BolinaoPangasinan	84,658	432	196.11 km²	0.19% a year
10	MangataremPangasinan	79,648	257	310.34 km²	0.10% a year
11	UminganPangasinan	78,940	296	266.78 km²	0.58% a year
12	BauangLa Union	77,670	1,078	72.08 km²	−0.24% a year
13	ManaoagPangasinan	76,606	1,379	55.55 km²	0.18% a year
14	BugallonPangasinan	76,027	420	181.00 km²	0.34% a year
15	PozorrubioPangasinan	75,143	1,069	70.32 km²	0.13% a year
16	RosalesPangasinan	67,510	978	69.01 km²	0.29% a year
17	AgooLa Union	65,256	1,237	52.75 km²	−0.28% a year
18	VillasisPangasinan	65,086	796	81.74 km²	0.01% a year
19	RosarioLa Union	58,797	779	75.48 km²	−0.59% a year
20	AsinganPangasinan	58,349	823	70.91 km²	0.22% a year
21	San ManuelPangasinan	56,876	443	128.35 km²	1.13% a year
22	BinalonanPangasinan	56,560	977	57.90 km²	0.08% a year
23	UrbiztondoPangasinan	56,349	1,320	42.70 km²	0.34% a year
24	NaguilianLa Union	53,443	517	103.35 km²	0.57% a year
25	BaniPangasinan	52,715	262	200.84 km²	0.05% a year
26	SisonPangasinan	51,439	1,143	45.02 km²	−0.41% a year
27	AringayLa Union	50,786	559	90.82 km²	0.19% a year
28	AlcalaPangasinan	49,479	891	55.56 km²	0.28% a year
29	NarvacanIlocos Sur	46,265	373	123.97 km²	0.02% a year
30	TayugPangasinan	45,476	976	46.61 km²	0.12% a year
31	AguilarPangasinan	45,363	233	194.74 km²	0.14% a year
32	BacnotanLa Union	45,203	615	73.53 km²	0.44% a year
33	San JacintoPangasinan	44,713	1,292	34.61 km²	0.20% a year
34	Santo TomasLa Union	42,777	1,071	39.94 km²	1.11% a year
35	AndaPangasinan	42,688	567	75.32 km²	0.65% a year
36	TagudinIlocos Sur	41,606	854	48.71 km²	0.04% a year
37	San JuanLa Union	41,319	697	59.31 km²	0.48% a year
38	Santa CruzIlocos Sur	41,296	461	89.64 km²	−0.04% a year
39	BalaoanLa Union	40,440	521	77.58 km²	0.06% a year
40	DingrasIlocos Norte	40,176	356	112.90 km²	0.03% a year
41	San NicolasPangasinan	40,144	152	263.79 km²	0.22% a year
42	San NicolasIlocos Norte	39,116	933	41.91 km²	0.14% a year
43	CabugaoIlocos Sur	38,981	422	92.34 km²	0.06% a year
44	SualPangasinan	38,625	301	128.51 km²	−0.29% a year
45	MapandanPangasinan	38,228	1,820	21.00 km²	0.11% a year
46	BangarLa Union	38,190	1,018	37.53 km²	0.09% a year
47	LunaLa Union	38,076	888	42.90 km²	0.48% a year
48	BasistaPangasinan	37,840	1,410	26.83 km²	0.10% a year
49	BantayIlocos Sur	37,088	518	71.63 km²	−0.02% a year
50	BautistaPangasinan	35,728	798	44.80 km²	0.22% a year

How it fits

Cities and municipalities are the local governments of the towns, each led by a mayor, a vice mayor and a council, and each made up of barangays. A municipality becomes a city by a law of Congress, once it earns enough and has enough people or land.

Sources

The list shows each place's own figures: people from the PSA's 2024 census, growth from its 2020 census, land areas from the Land Management Bureau's 2019 masterlist. Every figure's source is on its place's page; how Scene works out the rest.

1.Congress of the Philippines. Republic Act No. 7160: the Local Government Code of 1991. Published October 10, 1991. Read by Scene October 2, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
2.Congress of the Philippines. Republic Act No. 9009: amending Section 450 of the Local Government Code, raising the income a municipality needs to become a component city. Published February 24, 2001. Read by Scene October 3, 2026. Philippine government work, no copyright (Republic Act No. 8293, Section 176.1). Open the source
3.Philippine Statistics Authority. Philippine Standard Geographic Code (PSGC), 2nd Quarter 2026: Publication Datafile. Published June 30, 2026. Read by Scene September 24, 2026. CC BY (PSA Terms of Use). Open the source
4.Philippine Statistics Authority. Population and Annual Population Growth Rate of the Philippines and its Regions, Provinces, and Highly Urbanized Cities Based on the 2010, 2015, 2020 and 2024 Population Census (OpenSTAT table 0211A6DAPG0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source
5.Philippine Statistics Authority, from the Land Management Bureau (DENR). Population, Land Area, Population Density, and Percent Change in Population Density by Region, Province/Highly Urbanized City, and City/Municipality: 2015, 2020, and 2024 (OpenSTAT table 0221A6DLPD0). Published August 7, 2026. Read by Scene October 2, 2026. CC BY (PSA Terms of Use). Open the source

Scene adds what the sources do not print themselves: growth rates, shares, barangay areas and densities, coordinates, neighbours and distances, each computed from the figures and borders above. How each is made.

See something wrong on this page? Write to hello@scene.ph with the page address. We check every report against the source.