한국어

Population of Seo-gu, Daejeon

Resident registration data, June 2026 (MOIS)

Total population464,359people
Average age43.2yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s30s40s👑 50s60s70s80s90s100+13,94123,67331,29334,73833,74337,23130,28916,2475,616635713,13822,48831,41631,77335,02139,67033,60219,0818,7571,95247

Male 227,413Female 236,946

Age structure

Unit: %

Youth 10.8%Working age 71.0%Seniors 18.2%10.8%71.0%18.2%

Youth 10.8%Working age 71.0%Seniors 18.2%

50s is the largest group, at 76,901 people.

Population change

Change over time

4-year trend

Unit: people

470,332 in 2022467,866 in 2023461,940 in 2024460,885 in 2025464,359 in 202620222023202420252026

470,332 in 2022464,359 in 2026

Down 1.3% over the past 4 years.

Population ranking

Dunsan-dong has the largest population of the 27 neighborhoods.

Population by region

27
  • YoungestDoan-dong36.1 yrs
  • OldestHeukseok-dong63.7 yrs

There is a 27.6-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Dunsan-dong68,87214.8%41.9 yrs
Gwanjeo-dong61,26513.2%40.8 yrs
Wolpyeong-dong43,7209.4%45.7 yrs
Galma-dong43,5589.4%43.2 yrs
Doma-dong37,8628.2%46.8 yrs
Doan-dong36,4657.9%36.1 yrs
Tanbang-dong31,1996.7%40.7 yrs
Nae-dong21,4114.6%46.2 yrs
Boksu-dong20,3064.4%43.3 yrs
Yongmun-dong19,2044.1%42.3 yrs
Goejeong-dong18,1383.9%41.5 yrs
Jeongnim-dong15,0193.2%49.7 yrs
Byeon-dong12,0952.6%49.7 yrs
Mannyeon-dong11,8522.6%41.9 yrs
Gajang-dong10,2382.2%47.8 yrs
Gasuwon-dong9,6622.1%49.5 yrs
Heukseok-dong6150.1%63.7 yrs
Jangan-dong5140.1%51.8 yrs
Pyeongchon-dong4220.1%59.4 yrs
Sanjik-dong3040.1%62.1 yrs
Goegok-dong3010.1%61.1 yrs
O-dong3000.1%59.2 yrs
Wonjeong-dong2910.1%60.6 yrs
Maeno-dong2600.1%61.3 yrs
Bonggok-dong1730%62.8 yrs
Umyeong-dong1670%59.1 yrs
Yongchon-dong1460%63.5 yrs

The top three areas hold 37.4% of the population of Seo-gu, Daejeon.

Other regions

Other districts in Daejeon

4

Frequently asked questions❓

Seo-gu, Daejeon has 464,359 residents as of June 2026., 3,474 more than a year earlier.
Dunsan-dong, home to 68,872 residents — 14.8% of Seo-gu, Daejeon.
It is 43.2 as of June 2026., 2.4 years below the national average of 45.6. Among its neighborhoods, Doan-dong is youngest at 36.1 and Heukseok-dong oldest at 63.7.
It fell 1.3% over 4 years, from 470,332 in 2022 to 464,359 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 🌐