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Ranking

Densest cities and municipalities in Ilocos Sur

Vigan City (Ilocos Sur) is the most crowded of the 34 cities and municipalities in Ilocos Sur: 2,275 people for every km² in 2024.[1, 2]

Below are all 34 cities and municipalities, ordered by people for every km² of land, each with its 2020 count and its change since.

People are counted as of July 1, 2024 (the 2024 Census of Population) and May 1, 2020 (the 2020 Census of Population and Housing), both by the Philippine Statistics Authority.

Open Ilocos Sur
Densest cities and municipalities in Ilocos Sur, top 34
RankNameProvince or regionPeople, 2024People, 2020Change since 2020People per km²
1Vigan CityIlocos Sur54,49853,935+1.0%2,275
2Santa CatalinaIlocos Sur14,31914,493−1.2%1,530
3CaoayanIlocos Sur19,71519,574+0.7%1,062
4San VicenteIlocos Sur13,07413,118−0.3%987
5TagudinIlocos Sur41,60641,538+0.2%854
6Candon CityIlocos Sur61,31561,432−0.2%795
7San IldefonsoIlocos Sur8,2138,190+0.3%778
8Santa LuciaIlocos Sur26,20025,966+0.9%580
9Santo DomingoIlocos Sur29,37229,041+1.1%554
10BantayIlocos Sur37,08837,118−0.1%518
11Santa MariaIlocos Sur30,07630,006+0.2%476
12Santa CruzIlocos Sur41,29641,366−0.2%461
13San EstebanIlocos Sur8,6218,381+2.9%433
14CabugaoIlocos Sur38,98138,884+0.3%422
15SantiagoIlocos Sur19,77119,471+1.5%404
16NarvacanIlocos Sur46,26546,234+0.1%373
17MagsingalIlocos Sur31,97031,308+2.1%366
18San JuanIlocos Sur26,70926,674+0.1%356
19SinaitIlocos Sur26,05925,998+0.2%341
20GalimuyodIlocos Sur10,26310,244+0.2%335
21BanayoyoIlocos Sur7,9537,931+0.3%332
22BurgosIlocos Sur13,02612,793+1.8%265
23SantaIlocos Sur15,16414,992+1.2%239
24SugponIlocos Sur4,2384,930−14.0%187
25LidliddaIlocos Sur4,8464,705+3.0%158
26NagbukelIlocos Sur5,3705,465−1.7%119
27Gregorio del PilarIlocos Sur4,3854,472−2.0%113
28SalcedoIlocos Sur11,19611,110+0.8%110
29AlilemIlocos Sur7,7367,361+5.1%93
30SuyoIlocos Sur11,05110,766+2.7%79
31CervantesIlocos Sur20,06519,449+3.2%52
32QuirinoIlocos Sur9,4609,306+1.7%35
33SigayIlocos Sur2,5772,552+1.0%35
34San EmilioIlocos Sur7,5137,206+4.3%31

Density is a place's 2024 people divided by its land area. Areas are the Land Management Bureau's 2019 masterlist.

Sources

Every count here is the PSA's own, for the place as the PSA names it today. The change and the order are Scene's arithmetic on those counts. How Scene works out the rest.

  1. 1.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
  2. 2.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 works out the rest from these sources: growth rates, shares, areas, densities, coordinates, neighbours and distances. How.

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