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Sanbon New Town Apartments & Suriso Mountain, Sanbon-dong, Gunpo-siDaeyami Station & Banwol Lake, Daeyami-dong, Gunpo-siGunpo Station & Yeokjeon Market, Dang-dong, Gunpo-siGeumjeong Station & AK Plaza, Geumjeong-dong, Gunpo-si

Population of Gunpo-si, Gyeonggi

As of September 2026

Total population249,066people
Households111,789households
Average age45.8yrs
Sex ratioMale123,350peopleFemale125,716people49.5%50.5%

Population change

Change over time

4-year trend

Unit: people

267,651 in 2022263,496 in 2023258,092 in 2024252,401 in 2025249,066 in 202620222023202420252026

267,651 in 2022249,066 in 2026

Down 6.9% over the past 4 years.

Migration

As of August 2026

Monthly Overview

Moved in1,985people
Moved out2,146people
Net migrationβˆ’161people

Net migration by month

Unit: people

βˆ’100βˆ’326βˆ’156βˆ’355βˆ’318βˆ’301βˆ’384βˆ’294βˆ’273βˆ’280βˆ’229βˆ’161SepOctNovDecJanFebMarAprMayJunJulAugβˆ’100 in Sep 2025βˆ’326 in Oct 2025βˆ’156 in Nov 2025βˆ’355 in Dec 2025βˆ’318 in Jan 2026βˆ’301 in Feb 2026βˆ’384 in Mar 2026βˆ’294 in Apr 2026βˆ’273 in May 2026βˆ’280 in Jun 2026βˆ’229 in Jul 2026βˆ’161 in Aug 2026

Net inflowNet outflow

Top origins

Unit: people

RegionMoved in
Anyang-si230
Suwon-si95
Uiwang-si70
Ansan-si68
Hwaseong-si57

Top destinations

Unit: people

RegionMoved out
Anyang-si246
Suwon-si119
Uiwang-si104
Hwaseong-si93
Ansan-si91

Outflows exceeded inflows in every one of the past 12 months, for a net loss of 3,177.

Want more detail on migration in Gunpo-si?See more Gunpo-si statistics on GData

Population structure

Population by age

As of September 2026

Population by age and sex

Unit: people

Under 1010s20s30s40sπŸ‘‘ 50s60s70s80s90s100+5,98211,27715,08818,17817,46421,49620,1849,6403,497534105,74010,52313,70315,74817,26123,01521,59710,7585,8741,46926

Male 123,350Female 125,716

Age structure

Unit: %

Youth 9.1%Working age 69.8%Seniors 21.2%9.1%69.8%21.2%

Youth 9.1%Working age 69.8%Seniors 21.2%

50s is the largest group, at 44,511 people.

Population ranking

Population by region

As of September 2026
  • YoungestDomagyo-dong40.1 yrs
  • OldestDundae-dong59.5 yrs
RegionShare
Sanbon-dong102,06741%46.2 yrs
Dang-dong50,00120.1%46.4 yrs
Geumjeong-dong47,86719.2%46.6 yrs
Bugok-dong15,3976.2%43.3 yrs
Dangjeong-dong13,2755.3%44.4 yrs
Domagyo-dong11,5704.6%40.1 yrs
Daeyami-dong8,4833.4%47.2 yrs
Sokdal-dong2910.1%54.2 yrs
Dundae-dong1150%59.5 yrs

The top three areas hold 80.3% of the population of Gunpo-si, Gyeonggi.

Want to explore Gunpo-si's demographics in more detail?See more Gunpo-si statistics on GData

Frequently asked questions❓

Gunpo-si, Gyeonggi has 249,066 residents as of September 2026., 3,335 fewer than a year earlier.
Sanbon-dong, home to 102,067 residents (41.0% of Gunpo-si, Gyeonggi).
It is 45.8 as of September 2026., close to the national average of 45.7. Among its neighborhoods, Domagyo-dong is youngest at 40.1 and Dundae-dong oldest at 59.5.
It fell 6.9% over 4 years, from 267,651 in 2022 to 249,066 in September 2026.
As of August 2026, the most people moved in from Anyang-si (230) and the most moved out to Anyang-si (246). Outflows exceeded inflows in every one of the past 12 months, for a net loss of 3,177.
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 🌐