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Population of Mapo-gu, Seoul

Resident registration data, June 2026 (MOIS)

Total population356,487people
Average age43.5yrs

Population structure

Population by age

10-year bands · by sex

Population by age and sex

Unit: people

Under 1010s20s👑 30s40s50s60s70s80s90s100+9,16212,77723,06730,25826,05126,90220,16811,1015,203704108,69412,86730,55134,29128,07028,87022,50615,0828,4861,62738

Male 165,403Female 191,084

Age structure

Unit: %

Youth 8.6%Working age 73.6%Seniors 17.8%73.6%17.8%

Youth 8.6%Working age 73.6%Seniors 17.8%

30s is the largest group, at 64,549 people.

Population change

Change over time

4-year trend

Unit: people

367,584 in 2022365,111 in 2023363,029 in 2024359,622 in 2025356,487 in 202620222023202420252026

367,584 in 2022356,487 in 2026

Down 3% over the past 4 years.

Population ranking

Seongsan-dong has the largest population of the 26 neighborhoods.

Population by region

26
  • YoungestNogosan-dong40.6 yrs
  • OldestGusu-dong45.8 yrs

There is a 5.2-year gap in average age between the youngest and the oldest area.

RegionPopulationShareAverage age
Seongsan-dong46,87013.1%44.4 yrs
Mangwon-dong35,3989.9%45.7 yrs
Sangam-dong29,1108.2%42.8 yrs
Ahyeon-dong28,0237.9%43.1 yrs
Gongdeok-dong24,9717%43.5 yrs
Dohwa-dong21,0875.9%44.7 yrs
Seogyo-dong18,9275.3%42.7 yrs
Yeomni-dong17,8795%40.9 yrs
Daeheung-dong16,0904.5%42.9 yrs
Hapjeong-dong15,4464.3%44.6 yrs
Sinsu-dong15,3214.3%43.1 yrs
Changjeon-dong14,6834.1%42.1 yrs
Yeonnam-dong13,8253.9%44.2 yrs
Singongdeok-dong12,2553.4%43.5 yrs
Jung-dong9,3542.6%43.8 yrs
Yonggang-dong7,5402.1%41.7 yrs
Sangsu-dong7,2582%41.8 yrs
Nogosan-dong5,6761.6%40.6 yrs
Hyeonseok-dong5,0281.4%42.8 yrs
Donggyo-dong3,2380.9%43.8 yrs
Mapo-dong2,6590.7%43.9 yrs
Sinjeong-dong1,5050.4%43.7 yrs
Hajung-dong1,4130.4%45.6 yrs
Tojeong-dong1,2120.3%41.2 yrs
Dangin-dong9860.3%44.3 yrs
Gusu-dong7330.2%45.8 yrs

The top three areas hold 31.2% of the population of Mapo-gu, Seoul.

Other regions

Other districts in Seoul

16

Frequently asked questions❓

Mapo-gu, Seoul has 356,487 residents as of June 2026., 3,135 fewer than a year earlier.
Seongsan-dong, home to 46,870 residents — 13.1% of Mapo-gu, Seoul.
It is 43.5 as of June 2026., 2.1 years below the national average of 45.6. Among its neighborhoods, Nogosan-dong is youngest at 40.6 and Gusu-dong oldest at 45.8.
It fell 3% over 4 years, from 367,584 in 2022 to 356,487 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 🌐