Map of Cheonan, South Korea

Cheonan is a city in Chungcheongnam-do, South Korea, with a population of about 658,831. It lies at 36.8065°N, 127.1522°E. Cheonan is about 86 km (53 mi) south of Seoul, the capital. The nearest city on our map is Asan, 13 km to the west.

Cheonan at a glance

Where is Cheonan?

• The 14th largest city in South Korea by recorded population.
• The largest city in Chungcheongnam-do on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 38 min on the shortest day to 14 h 41 min on the longest day (around 21 December and 21 June).

Cities near Cheonan

• Asan — 13 km west
• Pyeongtaek — 22 km north
• Anseong — 25 km northeast
• Chinch'ŏn — 27 km east
• Sejong — 27 km southeast
• Yesan — 31 km southwest
• Cheongju-si — 35 km southeast
• Gongju — 39 km south
• Osan — 39 km north
• Hongseong — 49 km southwest

Largest cities in Chungcheongnam-do

• Asan — 97,749
• Boryeong — 94,191
• Hongseong — 89,174
• Seosan — 74,208
• Gongju — 72,435
• Buyeo — 59,823
• Nonsan — 43,845
• Yesan — 39,409

Largest cities in South Korea

• Seoul — 10,349,312
• Busan — 3,285,147
• Incheon — 3,015,482
• Daegu — 2,365,523
• Daejeon — 1,441,203
• Gwangju — 1,401,235
• Suwon — 1,234,582
• Ulsan — 1,098,421
• Goyang-si — 1,061,752
• Changwon — 1,025,702

Map of South Korea and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.