한국어

Population of Seoul

Resident registration data, June 2026 (MOIS)

Total population9,289,813people
Average age45.1yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s👑 30s40s50s60s70s80s90s100+232,823364,893574,435733,901669,845717,799625,291382,563152,99616,938313220,442351,282657,852735,870685,861743,406691,245467,877221,48841,5371,127

Male 4,471,801Female 4,818,012

Age structure

Unit: %

Youth 8.7%Working age 70.3%Seniors 20.9%70.3%20.9%

Youth 8.7%Working age 70.3%Seniors 20.9%

30s is the largest group, at 1,469,771 people.

Population change

Change over time

4-year trend

Unit: people

9,494,808 in 20229,414,115 in 20239,366,283 in 20249,325,616 in 20259,289,813 in 202620222023202420252026

9,494,808 in 20229,289,813 in 2026

Down 2.2% over the past 4 years.

Explore regions

Region map

Jongno-guJung-guYongsan-guSeongdong-guGwangjin-guDongdaemun-guJungnang-guSeongbuk-guGangbuk-guDobong-guNowon-guEunpyeong-guSeodaemun-guMapo-guYangcheon-guGangseo-guGuro-guGeumcheon-guYeongdeungpo-guDongjak-guGwanak-guSeocho-guGangnam-guSongpa-guGangdong-gu

Population ranking

Songpa-gu has the largest population of the 25 districts.

Population by region

25

There is a 6.1-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Songpa-gu650,2587%43.7 yrs
Gangnam-gu552,8306%43 yrs
Gangseo-gu548,5155.9%45.1 yrs
Gangdong-gu499,0115.4%44.2 yrs
Nowon-gu481,0535.2%45.8 yrs
Gwanak-gu477,7975.1%44.1 yrs
Eunpyeong-gu453,2124.9%46.6 yrs
Seongbuk-gu421,7624.5%45 yrs
Yangcheon-gu421,2474.5%44.8 yrs
Seocho-gu414,3834.5%43.1 yrs
Guro-gu382,6334.1%46.1 yrs
Jungnang-gu376,3864.1%47.3 yrs
Dongjak-gu371,9994%44.7 yrs
Yeongdeungpo-gu371,8674%44.3 yrs
Mapo-gu356,4873.8%43.5 yrs
Dongdaemun-gu352,8483.8%44.7 yrs
Gwangjin-gu330,9053.6%44.3 yrs
Seodaemun-gu299,8103.2%45.1 yrs
Dobong-gu298,2253.2%48.7 yrs
Gangbuk-gu278,0413%49.1 yrs
Seongdong-gu274,5173%44.6 yrs
Geumcheon-gu222,5032.4%46.7 yrs
Yongsan-gu199,6482.1%45.2 yrs
Jongno-gu136,3181.5%46.7 yrs
Jung-gu117,5581.3%46.9 yrs

The top three areas hold 18.9% of the population of Seoul.

Other regions

Other regions

16

Frequently asked questions❓

Seoul has 9,289,813 residents as of June 2026., 35,803 fewer than a year earlier.
Songpa-gu, home to 650,258 residents — 7.0% of Seoul.
It is 45.1 as of June 2026., 0.5 years below the national average of 45.6. Among its districts, Gangnam-gu is youngest at 43 and Gangbuk-gu oldest at 49.1.
It fell 2.2% over 4 years, from 9,494,808 in 2022 to 9,289,813 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 🌐