1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE
South Korea
Compare this sourced profile of Ansan-si, South Korea before planning. Stable fields identify the place; confirm current transport, access and opening details with official sources.
01What the data says — and does not say
This page separates the checked GeoNames row for Ansan-si—623,256, Asia/Seoul, and source coordinates—from live travel claims. Those fields identify and compare the record; they do not prove current transport, accessibility, census totals, or a City Atlas Club visit.
02This city's dataset fingerprint
The source row behind Ansan-si is GeoNames ID 1846918. Its recorded administrative path is Ansan-si → Gyeonggi-do → South Korea, and GeoNames classifies the place as a populated place. Ansan-si occurs once as a primary city label in this atlas sample; the numeric ID remains the durable source key if names change. The city row itself was updated 2025-04-01; that date belongs to the source record, not to every transport or visitor detail in the real destination.
Within the fixed 1,206-record atlas, Ansan-si ranks 896 by recorded population. Inside the 22 selected South Korea entries it ranks 17; inside the 632 entries in its broad region it ranks 487. Its 623,256 population value is 0.71 times the 883,490 median for the country cohort and 0.62 times the 1,008,426 regional median. Ansan-si sits in the lower half of this atlas's selected South Korea entries. Ansan-si's recorded value is materially below the country-cohort median used here. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.
Ansan-si's three nearest other atlas coordinates are Anyang-si at 12.033 km with 595,644 recorded people; Hwaseong-si at 12.994 km with 640,890 recorded people; Suwon at 16.925 km with 1,234,582 recorded people. The closest-to-farthest distance spread is 4.892 km. Compared with Anyang-si, Ansan-si's recorded population is 1.05 times as large. Against Ansan-si, Anyang-si follows Anyang-si → Gyeonggi-do → South Korea in the source. Its point has higher latitude and higher longitude; it belongs to the same selected South Korea cohort, uses the shared Asia/Seoul identifier, and carries the same populated place class. Its recorded population is below Ansan-si's. Against Ansan-si, Hwaseong-si follows Hwaseong-si → Gyeonggi-do → South Korea in the source. Its point has lower latitude and lower longitude; it belongs to the same selected South Korea cohort, uses the shared Asia/Seoul identifier, and carries the same populated place class. Its recorded population is above Ansan-si's. Against Ansan-si, Suwon follows Suwon-si → Gyeonggi-do → South Korea in the source. Its point has lower latitude and higher longitude; it belongs to the same selected South Korea cohort, uses the shared Asia/Seoul identifier, and carries first-order administrative seat rather than populated place. Its recorded population is above Ansan-si's. Its nearest-neighbor distance ranks 173 of 1,206 from shortest to longest in the same snapshot. Ansan-si's nearest-coordinate gap falls between the tightest tenth and quarter of the atlas. This pattern can reveal whether other catalog references are geographically close, but it cannot establish whether a border crossing is possible or practical, or whether rail, road, fare, or journey-time connections exist. Read as one record signature, GeoNames 1846918, the coordinate pair 37.3236 / 126.8219, country rank 17 of 22, and neighbor GeoNames 1846898 at 12.033 km bind Ansan-si to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.
Ansan-si's reference point is 37.3236° north and 126.8219° east. The IANA identifier Asia/Seoul is shared by 22 city rows in this catalog, while the GeoNames class PPL is shared by 243 rows. Ansan-si's row carries both second- and first-order administrative labels. Ansan-si's point falls in the middle-latitude coordinate band used by this atlas's row checks. Ansan-si's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Ansan-si, so the profile preserves that missing value instead of guessing terrain. Together these fields form a reproducible identity check for this page, not a claim about walkability, climate or accessibility.
03Nearby atlas references
Ansan-si's closest other entries in this atlas are Anyang-si (12.033 km), Hwaseong-si (12.994 km), Suwon (16.925 km).
04Verify before you book
Before visiting Ansan-si, confirm changing decisions with current first-party sources:
Read how City Atlas Club verifies changing travel facts →05Sources and freshness
GeoNames updated the row 2025-04-01; the atlas checked the dataset 2026-08-04. Available Wikidata fields were verified in the same run.
GeoNames data: CC BY 4.0. Wikidata labels and descriptions: CC0 1.0.