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Korea University Main Hall, Anamdong5-ga, Seongbuk-guBukjeong Village Alley, Seongbuk-dong, Seongbuk-guBukhansan National Park View, Jeongneung-dong, Seongbuk-guUireung Royal Tomb History & Culture Center, Seokgwan-dong, Seongbuk-guSeongbukcheon Stream Path & Bomun-dong, Bomundong1-ga, Seongbuk-guStreet by Sungshin Women's Univ. Station, Donam-dong, Seongbuk-guJangsu Village Alley, Samseondong1-ga, Seongbuk-guGireum Market, Gireum-dong, Seongbuk-gu

Population of Seongbuk-gu, Seoul

As of September 2026

Total population421,106people
Households199,768households
Average age45.1yrs
Sex ratioMale200,771peopleFemale220,335people47.7%52.3%

Population change

Change over time

4-year trend

Unit: people

433,386 in 2022428,122 in 2023423,742 in 2024424,129 in 2025421,106 in 202620222023202420252026

433,386 in 2022421,106 in 2026

Down 2.8% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in4,270people
Moved out4,403people
Net migrationβˆ’133people

Net migration by month

Unit: people

βˆ’76βˆ’239βˆ’247βˆ’690βˆ’395424214βˆ’317βˆ’245βˆ’395βˆ’425βˆ’133SepOctNovDecJanFebMarAprMayJunJulAugβˆ’76 in Sep 2025βˆ’239 in Oct 2025βˆ’247 in Nov 2025βˆ’690 in Dec 2025βˆ’395 in Jan 2026424 in Feb 2026214 in Mar 2026βˆ’317 in Apr 2026βˆ’245 in May 2026βˆ’395 in Jun 2026βˆ’425 in Jul 2026βˆ’133 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

RegionMoved in
Gangbuk-gu216
Dongdaemun-gu194
Nowon-gu166
Jongno-gu120
Dobong-gu103

Top destinations

Unit: people

RegionMoved out
Gangbuk-gu252
Dongdaemun-gu219
Nowon-gu207
Jongno-gu125
Dobong-gu112

Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 2,524.

Want more detail on migration in Seongbuk-gu?See more Seongbuk-gu statistics on GData

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40sπŸ‘‘ 50s60s70s80s90s100+10,74716,92128,69228,44729,11734,27427,55316,7287,4398381410,11516,78333,13628,67129,76135,83630,90921,36811,6192,07957

Male 200,771Female 220,335

Age structure

Unit: %

Youth 9.0%Working age 69.8%Seniors 21.2%9.0%69.8%21.2%

Youth 9.0%Working age 69.8%Seniors 21.2%

50s is the largest group, at 70,110 people.

Population ranking

Population by region

As of September 2026
  • YoungestAnamdong5-ga32.5 yrs
  • OldestDongsomundong2-ga51.9 yrs
RegionShare
Jeongneung-dong74,67017.7%46.8 yrs
Jangwi-dong56,74413.5%45.3 yrs
Gireum-dong54,47012.9%41.8 yrs
Hawolgok-dong37,3568.9%45.4 yrs
Donam-dong36,9298.8%45.6 yrs
Jongam-dong36,6188.7%45.7 yrs
Seokgwan-dong32,7357.8%48 yrs
Seongbuk-dong9,8592.3%48 yrs
Sangwolgok-dong8,9202.1%47 yrs
Bomundong6-ga5,8581.4%44.7 yrs

The top three areas hold 44.1% of the population of Seongbuk-gu, Seoul.

Want to explore Seongbuk-gu's demographics in more detail?See more Seongbuk-gu statistics on GData

Frequently asked questions❓

Seongbuk-gu, Seoul has 421,106 residents as of September 2026., 3,023 fewer than a year earlier.
Jeongneung-dong, home to 74,670 residents (17.7% of Seongbuk-gu, Seoul).
It is 45.1 as of September 2026., 0.6 years below the national average of 45.7. Among its neighborhoods, Anamdong5-ga is youngest at 32.5 and Dongsomundong2-ga oldest at 51.9.
It fell 2.8% over 4 years, from 433,386 in 2022 to 421,106 in September 2026.
As of August 2026, the most people moved in from Gangbuk-gu (216) and the most moved out to Gangbuk-gu (252). Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 2,524.
This is resident registration data from Korea's Ministry of the Interior and Safety. Figures are as of the end of September 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 🌐