한국어

Population of South Korea

Resident registration data, June 2026 (MOIS)

Total population51,091,769people
Average age45.6yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s40s👑 50s60s70s80s90s100+1,481,5452,369,3252,882,8693,506,4563,826,3994,334,1033,943,5512,165,221812,69294,5821,4911,408,7522,248,6752,676,8923,192,6103,685,1324,267,1704,040,2552,517,7001,337,717291,0827,387

Male 25,418,248Female 25,673,521

Age structure

Unit: %

Youth 10.2%Working age 67.9%Seniors 22.0%10.2%67.9%22.0%

Youth 10.2%Working age 67.9%Seniors 22.0%

50s is the largest group, at 8,601,273 people.

Population change

Change over time

4-year trend

Unit: people

51,578,178 in 202251,392,745 in 202351,271,480 in 202451,164,582 in 202551,091,769 in 202620222023202420252026

51,578,178 in 202251,091,769 in 2026

Down 0.9% over the past 4 years.

Explore regions

Region map

SeoulBusanDaeguIncheonGwangjuDaejeonUlsanSejongGyeonggiChungcheongbukChungcheongnamJeollanamGyeongsangbukGyeongsangnamJejuGangwonJeonbuk

Population ranking

Gyeonggi has the largest population of the 17 provinces.

Population by region

17

There is a 10.0-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Gyeonggi13,761,78326.9%43.9 yrs
Seoul9,289,81318.2%45.1 yrs
Busan3,232,3706.3%47.5 yrs
Gyeongsangnam3,195,3516.3%47.1 yrs
Incheon3,061,0026%44.6 yrs
Gyeongsangbuk2,495,9194.9%49.1 yrs
Daegu2,348,1654.6%46.2 yrs
Chungcheongnam2,138,7854.2%46.6 yrs
Jeollanam1,773,6463.5%49.4 yrs
Jeonbuk1,718,6333.4%48.4 yrs
Chungcheongbuk1,600,7873.1%46.6 yrs
Gangwon1,507,2173%48.5 yrs
Daejeon1,442,0342.8%44.2 yrs
Gwangju1,385,4602.7%44.1 yrs
Ulsan1,087,0892.1%44.8 yrs
Jeju662,7921.3%45.1 yrs
Sejong390,9230.8%39.4 yrs

The top three areas hold 51.4% of the population of South Korea.

Frequently asked questions❓

South Korea has 51,091,769 residents as of June 2026., 72,813 fewer than a year earlier.
Gyeonggi, home to 13,761,783 residents — 26.9% of South Korea.
It is 45.6 as of June 2026. Among its provinces, Sejong is youngest at 39.4 and Jeollanam oldest at 49.4.
It fell 0.9% over 4 years, from 51,578,178 in 2022 to 51,091,769 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 🌐