한국어

Population of Seo-gu, Incheon

Resident registration data, June 2026 (MOIS)

Total population662,875people
Average age41.7yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s👑 40s50s60s70s80s90s100+27,47634,49234,97652,73959,27054,42544,59418,8855,5046151926,02833,19433,94350,92355,26053,98744,14120,6909,3762,26870

Male 332,995Female 329,880

Age structure

Unit: %

Youth 13.2%Working age 71.5%Seniors 15.4%13.2%71.5%15.4%

Youth 13.2%Working age 71.5%Seniors 15.4%

40s is the largest group, at 114,530 people.

Population change

Change over time

4-year trend

Unit: people

571,547 in 2022604,017 in 2023630,949 in 2024644,376 in 2025662,875 in 202620222023202420252026

571,547 in 2022662,875 in 2026

Up 16% over the past 4 years.

Population ranking

Cheongna-dong has the largest population of the 21 neighborhoods.

Population by region

21
  • YoungestWondang-dong36.6 yrs
  • OldestSicheon-dong61.1 yrs

There is a 24.5-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Cheongna-dong115,17817.4%37.8 yrs
Dangha-dong81,13712.2%39 yrs
Gajeong-dong67,69610.2%40.8 yrs
Gajwa-dong57,0898.6%47.8 yrs
Wondang-dong50,0577.6%36.6 yrs
Majeon-dong48,9427.4%43.6 yrs
Bullo-dong47,3057.1%38.2 yrs
Seongnam-dong44,0346.6%49.1 yrs
Geomam-dong28,9334.4%42.6 yrs
Sinhyeon-dong28,1884.3%45.3 yrs
Wanggil-dong19,7553%44.3 yrs
Simgok-dong19,5783%48.3 yrs
Gyeongseo-dong14,3662.2%41.5 yrs
Baekseok-dong12,6291.9%36.8 yrs
Yeonhui-dong12,1821.8%47.9 yrs
Oryu-dong5,7550.9%45.1 yrs
Geumgok-dong4,2910.6%45 yrs
Gongchon-dong4,2430.6%48.2 yrs
Daegok-dong1,1040.2%58.6 yrs
Wonchang-dong3330.1%48.3 yrs
Sicheon-dong800%61.1 yrs

The top three areas hold 39.8% of the population of Seo-gu, Incheon.

Other regions

Other districts in Incheon

9

Frequently asked questions❓

Seo-gu, Incheon has 662,875 residents as of June 2026., 18,499 more than a year earlier.
Cheongna-dong, home to 115,178 residents — 17.4% of Seo-gu, Incheon.
It is 41.7 as of June 2026., 3.9 years below the national average of 45.6. Among its neighborhoods, Wondang-dong is youngest at 36.6 and Sicheon-dong oldest at 61.1.
It rose 16% over 4 years, from 571,547 in 2022 to 662,875 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 🌐