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Population of Gangdong-gu, Seoul

Resident registration data, June 2026 (MOIS)

Total population499,011people
Average age44.2yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s👑 40s50s60s70s80s90s100+16,40623,31425,56537,87040,25137,13833,78221,0896,8866431315,14720,70228,61639,34641,00438,02038,12224,3518,7861,89365

Male 242,958Female 256,053

Age structure

Unit: %

Youth 10.7%Working age 69.3%Seniors 20.0%10.7%69.3%20.0%

Youth 10.7%Working age 69.3%Seniors 20.0%

40s is the largest group, at 81,255 people.

Population change

Change over time

4-year trend

Unit: people

461,630 in 2022458,953 in 2023462,646 in 2024498,079 in 2025499,011 in 202620222023202420252026

461,630 in 2022499,011 in 2026

Up 8.1% over the past 4 years.

Population ranking

Cheonho-dong has the largest population of the 9 neighborhoods.

Population by region

9
  • YoungestGodeok-dong40.7 yrs
  • OldestCheonho-dong46.6 yrs

There is a 5.9-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Cheonho-dong87,54717.5%46.6 yrs
Seongnae-dong64,18212.9%45.8 yrs
Amsa-dong63,79512.8%45.6 yrs
Dunchon-dong58,09311.6%42.5 yrs
Sangil-dong51,98310.4%40.9 yrs
Godeok-dong49,77910%40.7 yrs
Gil-dong47,8989.6%46.1 yrs
Myeongil-dong41,5118.3%43.6 yrs
Gangil-dong34,2236.9%43.7 yrs

The top three areas hold 43.2% of the population of Gangdong-gu, Seoul.

Other regions

Other districts in Seoul

16

Frequently asked questions❓

Gangdong-gu, Seoul has 499,011 residents as of June 2026., 932 more than a year earlier.
Cheonho-dong, home to 87,547 residents — 17.5% of Gangdong-gu, Seoul.
It is 44.2 as of June 2026., 1.4 years below the national average of 45.6. Among its neighborhoods, Godeok-dong is youngest at 40.7 and Cheonho-dong oldest at 46.6.
It rose 8.1% over 4 years, from 461,630 in 2022 to 499,011 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 🌐