Total population420,127people
Households178,800households
Average age44.9yrs
Sex ratioMale204,281peopleFemale215,846people48.6%51.4%
Population change
Change over time
4-year trendUnit: people
443,847 in 2022420,127 in 2026
Down 5.3% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in3,854people
Moved out4,291people
Net migrationβ437people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gangseo-gu | 430 |
| Yeongdeungpo-gu | 238 |
| Guro-gu | 160 |
| Gwanak-gu | 98 |
| Goyang-si, Gyeonggi | 86 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Gangseo-gu | 576 |
| Guro-gu | 187 |
| Bucheon-si, Gyeonggi | 184 |
| Yeongdeungpo-gu | 121 |
| Seocho-gu | 99 |
Outflows exceeded inflows in every one of the past 12 months, for a net loss of 6,396.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 204,281Female 215,846
Age structure
Unit: %
Youth 10.6%Working age 68.7%Seniors 20.7%
50s is the largest group, at 70,687 people.
Population ranking
Population by region
As of September 2026| Region | Share | ||
|---|---|---|---|
| Sinjeong-dong | 164,539 | 39.2% | 44.6 yrs |
| Mok-dong | 141,821 | 33.8% | 42.8 yrs |
| Sinwol-dong | 113,767 | 27.1% | 47.9 yrs |
Sinjeong-dong alone holds 39.2% of the population of Yangcheon-gu, Seoul.
Want to explore Yangcheon-gu's demographics in more detail?See more Yangcheon-gu statistics on GData
Frequently asked questionsβ
Yangcheon-gu, Seoul has 420,127 residents as of September 2026., 6,865 fewer than a year earlier.
Sinjeong-dong, home to 164,539 residents (39.2% of Yangcheon-gu, Seoul).
It is 44.9 as of September 2026., 0.8 years below the national average of 45.7. Among its neighborhoods, Mok-dong is youngest at 42.8 and Sinwol-dong oldest at 47.9.
It fell 5.3% over 4 years, from 443,847 in 2022 to 420,127 in September 2026.
As of August 2026, the most people moved in from Gangseo-gu (430) and the most moved out to Gangseo-gu (576). Outflows exceeded inflows in every one of the past 12 months, for a net loss of 6,396.
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