Total population480,045people
Households217,433households
Average age45.9yrs
Sex ratioMale229,266peopleFemale250,779people47.8%52.2%
Population change
Change over time
4-year trendUnit: people
507,076 in 2022480,045 in 2026
Down 5.3% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in4,568people
Moved out5,075people
Net migrationβ507people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Dobong-gu | 242 |
| Jungnang-gu | 216 |
| Seongbuk-gu | 207 |
| Uijeongbu-si, Gyeonggi | 157 |
| Dongdaemun-gu | 144 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Uijeongbu-si, Gyeonggi | 289 |
| Dobong-gu | 288 |
| Jungnang-gu | 236 |
| Namyangju-si, Gyeonggi | 228 |
| Seongbuk-gu | 166 |
Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 4,850.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 229,266Female 250,779
Age structure
Unit: %
Youth 9.2%Working age 68.5%Seniors 22.3%
50s is the largest group, at 82,124 people.
Population ranking
Population by region
As of September 2026- YoungestGongneung-dong43.9 yrs
- OldestWolgye-dong47.8 yrs
| Region | Share | ||
|---|---|---|---|
| Sanggye-dong | 190,383 | 39.7% | 46.8 yrs |
| Junggye-dong | 97,122 | 20.2% | 44.7 yrs |
| Gongneung-dong | 75,808 | 15.8% | 43.9 yrs |
| Wolgye-dong | 72,252 | 15.1% | 47.8 yrs |
| Hagye-dong | 44,480 | 9.3% | 45 yrs |
The top three areas hold 75.7% of the population of Nowon-gu, Seoul.
Frequently asked questionsβ
Nowon-gu, Seoul has 480,045 residents as of September 2026., 5,413 fewer than a year earlier.
Sanggye-dong, home to 190,383 residents (39.7% of Nowon-gu, Seoul).
It is 45.9 as of September 2026., close to the national average of 45.7. Among its neighborhoods, Gongneung-dong is youngest at 43.9 and Wolgye-dong oldest at 47.8.
It fell 5.3% over 4 years, from 507,076 in 2022 to 480,045 in September 2026.
As of August 2026, the most people moved in from Dobong-gu (242) and the most moved out to Uijeongbu-si, Gyeonggi (289). Outflows exceeded inflows in 10 of the past 12 months, for a net loss of 4,850.
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