Map of Koesan, South Korea

Koesan is a city in North Chungcheong, South Korea, with a population of about 44,461. It lies at 36.8108°N, 127.7947°E. Koesan is about 111 km (69 mi) southeast of Seoul, the capital. The nearest city on our map is Chungju, 22 km to the northeast.

Koesan at a glance

Where is Koesan?

• The 5th largest city in North Chungcheong 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 Koesan

• Chungju — 22 km northeast
• Chinch'ŏn — 32 km west
• Cheongju-si — 33 km southwest
• Mungyeong — 43 km southeast
• Sejong — 51 km southwest
• Anseong — 52 km northwest
• Sangju — 55 km southeast
• Yeoju — 56 km north
• Cheonan — 57 km west
• Pubal — 59 km northwest

Largest cities in North Chungcheong

• Cheongju-si — 852,147
• Chungju — 209,483
• Chinch'ŏn — 60,964
• Okcheon — 56,634
• Yeongdong — 43,680

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.