한국어

Population of Seobuk-gu, Cheonan-si

Resident registration data, June 2026 (MOIS)

Total population402,529people
Average age40.8yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s👑 40s50s60s70s80s90s100+14,56322,08427,87435,47537,33833,40424,0739,6923,174379313,74921,03224,15529,76732,68232,23422,97110,9335,6281,29424

Male 208,059Female 194,470

Age structure

Unit: %

Youth 12.4%Working age 74.0%Seniors 13.6%12.4%74.0%13.6%

Youth 12.4%Working age 74.0%Seniors 13.6%

40s is the largest group, at 70,020 people.

Population change

Change over time

4-year trend

Unit: people

401,579 in 2022400,803 in 2023397,728 in 2024401,211 in 2025402,529 in 202620222023202420252026

401,579 in 2022402,529 in 2026

Barely changed over the past 4 years.

Population ranking

Dujeong-dong has the largest population of the 15 neighborhoods.

Population by region

15
  • YoungestSeongseong-dong32.1 yrs
  • OldestIpjang-myeon55.7 yrs

There is a 23.6-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Dujeong-dong73,51218.3%38.6 yrs
Buldang-dong68,82817.1%35.8 yrs
Ssangyong-dong62,56915.5%44.2 yrs
Baekseok-dong40,26310%38.2 yrs
Seongjeong-dong36,7559.1%45 yrs
Seongseong-dong26,2506.5%32.1 yrs
Seonghwan-eup21,4305.3%51.7 yrs
Seonggeo-eup21,2695.3%45.9 yrs
Jiksan-eup18,9574.7%46.7 yrs
Chaam-dong12,4753.1%32.9 yrs
Ipjang-myeon7,3281.8%55.7 yrs
Wachon-dong4,4401.1%43.7 yrs
Budae-dong4,3151.1%36.6 yrs
Sindang-dong3,4890.9%44.3 yrs
Eopseong-dong6490.2%53 yrs

The top three areas hold 50.9% of the population of Seobuk-gu, Cheonan-si.

Other regions

Other districts in Chungcheongnam

15

Frequently asked questions❓

Seobuk-gu, Cheonan-si has 402,529 residents as of June 2026., 1,318 more than a year earlier.
Dujeong-dong, home to 73,512 residents — 18.3% of Seobuk-gu, Cheonan-si.
It is 40.8 as of June 2026., 4.8 years below the national average of 45.6. Among its neighborhoods, Seongseong-dong is youngest at 32.1 and Ipjang-myeon oldest at 55.7.
It rose 0.2% over 4 years, from 401,579 in 2022 to 402,529 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 🌐