Total population552,357people
Households245,029households
Average age43.1yrs
Sex ratioMale263,451peopleFemale288,906people47.7%52.3%
Population change
Change over time
4-year trendUnit: people
532,500 in 2022552,357 in 2026
Up 3.7% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in6,789people
Moved out7,110people
Net migrationβ321people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Seocho-gu | 452 |
| Songpa-gu | 419 |
| Seongnam-si, Gyeonggi | 266 |
| Seongdong-gu | 216 |
| Yongin-si, Gyeonggi | 204 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Seocho-gu | 732 |
| Songpa-gu | 466 |
| Seongnam-si, Gyeonggi | 273 |
| Yongin-si, Gyeonggi | 224 |
| Seongdong-gu | 167 |
Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 5,010.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 263,451Female 288,906
Age structure
Unit: %
Youth 11.4%Working age 70.8%Seniors 17.8%
40s is the largest group, at 98,760 people.
Population ranking
Population by region
As of September 2026- YoungestYeoksam-dong41.1 yrs
- OldestSuseo-dong49.8 yrs
| Region | Share | ||
|---|---|---|---|
| Gaepo-dong | 87,312 | 15.8% | 43.5 yrs |
| Daechi-dong | 80,059 | 14.5% | 41.2 yrs |
| Yeoksam-dong | 70,317 | 12.7% | 41.1 yrs |
| Dogok-dong | 51,586 | 9.3% | 42.9 yrs |
| Irwon-dong | 46,154 | 8.4% | 42.3 yrs |
| Samseong-dong | 42,853 | 7.8% | 43.2 yrs |
| Nonhyeon-dong | 40,669 | 7.4% | 44.1 yrs |
| Apgujeong-dong | 29,868 | 5.4% | 45.8 yrs |
| Jagok-dong | 28,089 | 5.1% | 41.5 yrs |
| Cheongdam-dong | 26,480 | 4.8% | 44 yrs |
| Suseo-dong | 21,049 | 3.8% | 49.8 yrs |
| Segok-dong | 13,796 | 2.5% | 44.8 yrs |
| Sinsa-dong | 10,345 | 1.9% | 45.3 yrs |
| Yulhyeon-dong | 3,780 | 0.7% | 43.9 yrs |
The top three areas hold 43.0% of the population of Gangnam-gu, Seoul.
Frequently asked questionsβ
Gangnam-gu, Seoul has 552,357 residents as of September 2026., 4,064 fewer than a year earlier.
Gaepo-dong, home to 87,312 residents (15.8% of Gangnam-gu, Seoul).
It is 43.1 as of September 2026., 2.6 years below the national average of 45.7. Among its neighborhoods, Yeoksam-dong is youngest at 41.1 and Suseo-dong oldest at 49.8.
It rose 3.7% over 4 years, from 532,500 in 2022 to 552,357 in September 2026.
As of August 2026, the most people moved in from Seocho-gu (452) and the most moved out to Seocho-gu (732). Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 5,010.
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 π
- Resident registration data, Ministry of the Interior and SafetyKOGL Type 1 Β· as of September 2026 Β· updated monthly
- Internal Migration Statistics, Statistics Korea (KOSIS)KOGL Type 1 Β· as of August 2026 Β· updated monthly







