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Population of Dongnam-gu, Cheonan-si

Resident registration data, June 2026 (MOIS)

Total population263,653people
Average age44.8yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s40s👑 50s60s70s80s90s100+7,27212,78317,12518,03520,07623,46820,75310,1043,54843366,95012,27015,25515,17318,59122,75120,53411,1305,8821,48331

Male 133,603Female 130,050

Age structure

Unit: %

Youth 10.1%Working age 69.7%Seniors 20.2%10.1%69.7%20.2%

Youth 10.1%Working age 69.7%Seniors 20.2%

50s is the largest group, at 46,219 people.

Population change

Change over time

4-year trend

Unit: people

255,635 in 2022258,129 in 2023260,592 in 2024260,756 in 2025263,653 in 202620222023202420252026

255,635 in 2022263,653 in 2026

Up 3.1% over the past 4 years.

Population ranking

Cheongdang-dong has the largest population of the 28 neighborhoods.

Population by region

28
  • YoungestCheongdang-dong37.8 yrs
  • OldestDong-myeon63.9 yrs

There is a 26.1-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Cheongdang-dong38,20514.5%37.8 yrs
Sinbang-dong36,50213.8%41.9 yrs
Sinbu-dong30,02911.4%41.8 yrs
Mokcheon-eup21,7178.2%49.2 yrs
Yonggok-dong18,8847.2%40.3 yrs
Bongmyeong-dong15,5905.9%45.4 yrs
Wonseong-dong13,9055.3%52.7 yrs
Daga-dong11,4344.3%47.5 yrs
Pungse-myeon10,5574%45.2 yrs
Guseong-dong9,4093.6%48.1 yrs
Cheongsu-dong9,1673.5%46.2 yrs
Anseo-dong9,0373.4%40.6 yrs
Munhwa-dong6,5222.5%40 yrs
Byeongcheon-myeon5,8372.2%53.5 yrs
Buk-myeon3,9761.5%58.2 yrs
Gwangdeok-myeon3,9501.5%59.8 yrs
Samnyong-dong2,7341%39.2 yrs
Seongnam-myeon2,7341%60 yrs
Yeongseong-dong2,2280.8%52.2 yrs
Yuryang-dong2,0510.8%50.2 yrs
Susin-myeon1,9820.8%60.2 yrs
Dong-myeon1,8640.7%63.9 yrs
Ssangyong-dong1,4580.6%47.6 yrs
Seonghwang-dong1,2690.5%53.4 yrs
Sajik-dong1,1290.4%57.6 yrs
Daeheung-dong5930.2%58.7 yrs
Oryong-dong4450.2%56.1 yrs
Guryong-dong4450.2%57.4 yrs

The top three areas hold 39.7% of the population of Dongnam-gu, Cheonan-si.

Other regions

Other districts in Chungcheongnam

15

Frequently asked questions❓

Dongnam-gu, Cheonan-si has 263,653 residents as of June 2026., 2,897 more than a year earlier.
Cheongdang-dong, home to 38,205 residents — 14.5% of Dongnam-gu, Cheonan-si.
It is 44.8 as of June 2026., 0.8 years below the national average of 45.6. Among its neighborhoods, Cheongdang-dong is youngest at 37.8 and Dong-myeon oldest at 63.9.
It rose 3.1% over 4 years, from 255,635 in 2022 to 263,653 in June 2026.
This is resident registration data from Korea's Ministry of the Interior and Safety. Figures are as of the end of June 2026 and are updated monthly. The data is open under KOGL Type 1.
Resident registration counts people at their registered address. The census counts them where they actually live. The gap is widest in university towns and industrial areas, where many people never change their registered address.

Sources 🌐