Map of Hongseong, South Korea

Hongseong is the administrative centre of Chungcheongnam-do, South Korea, with a population of about 89,174. It lies at 36.6009°N, 126.6650°E. Hongseong is about 111 km (69 mi) south of Seoul, the capital. The nearest city on our map is Yesan, 18 km to the northeast.

Hongseong at a glance

Where is Hongseong?

• The 4th largest city in Chungcheongnam-do on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 39 min on the shortest day to 14 h 40 min on the longest day (around 21 December and 21 June).

Cities near Hongseong

• Yesan — 18 km northeast
• Seosan — 28 km northwest
• Boryeong — 29 km south
• Asan — 36 km northeast
• Buyeo — 42 km southeast
• Gongju — 44 km east
• Cheonan — 49 km northeast
• Sejong — 56 km east
• Pyeongtaek — 58 km northeast
• Nonsan — 58 km southeast

Largest cities in Chungcheongnam-do

• Cheonan — 658,831
• Asan — 97,749
• Boryeong — 94,191
• 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.