1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE
South Korea
Compare this sourced profile of Cheonan, 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 Cheonan—658,831, 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.
Wikidata's localized description: big city of South Korea.
02This city's dataset fingerprint
The source row behind Cheonan is GeoNames ID 1845759. Its recorded administrative path is Cheonan-si → Chungcheongnam-do → South Korea, and GeoNames classifies the place as a populated place. Cheonan 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, Cheonan ranks 840 by recorded population. Inside the 22 selected South Korea entries it ranks 14; inside the 632 entries in its broad region it ranks 466. Its 658,831 population value is 0.75 times the 883,490 median for the country cohort and 0.65 times the 1,008,426 regional median. Cheonan sits in the lower half of this atlas's selected South Korea entries. Cheonan'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.
Cheonan's three nearest other atlas coordinates are Cheongju-si at 35.486 km with 852,147 recorded people; Hwaseong-si at 53.553 km with 640,890 recorded people; Daejeon at 54.939 km with 1,441,203 recorded people. The closest-to-farthest distance spread is 19.453 km. Compared with Cheongju-si, Cheonan's recorded population is 0.77 times as large. Against Cheonan, Cheongju-si follows Cheongju-si → North Chungcheong → 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 Cheonan's. Against Cheonan, Hwaseong-si follows Hwaseong-si → Gyeonggi-do → South Korea in the source. Its point has higher 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 below Cheonan's. Against Cheonan, Daejeon follows Daejeon → 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 Cheonan's. Its nearest-neighbor distance ranks 345 of 1,206 from shortest to longest in the same snapshot. Cheonan's nearest-coordinate gap sits in the second quarter of atlas distances. 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 1845759, the coordinate pair 36.8065 / 127.1522, country rank 14 of 22, and neighbor GeoNames 1845604 at 35.486 km bind Cheonan to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.
Cheonan's reference point is 36.8065° north and 127.1522° 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. Cheonan's row carries both second- and first-order administrative labels. Cheonan's point falls in the middle-latitude coordinate band used by this atlas's row checks. Cheonan's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Cheonan, 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
Cheonan's closest other entries in this atlas are Cheongju-si (35.486 km), Hwaseong-si (53.553 km), Daejeon (54.939 km).
04Verify before you book
Before visiting Cheonan, 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.