Population of Seongsan-gu, Changwon-si
Resident registration data, June 2026 (MOIS)
Total population245,292people
Average age43.1yrs
Population structure
Population by age
10-year bands · by sexPopulation by age and sex
Unit: people
Male 125,181Female 120,111
Age structure
Unit: %
Youth 11.2%Working age 72.6%Seniors 16.2%
50s is the largest group, at 45,662 people.
Population change
Change over time
4-year trendUnit: people
250,029 in 2022245,292 in 2026
Down 1.9% over the past 4 years.
Population ranking
Sangnam-dong has the largest population of the 36 neighborhoods.
Population by region
36- YoungestGwihyeon-dong28.5 yrs
- OldestTowol-dong72.9 yrs
There is a 44.4-year gap in average age between the youngest and the oldest area.
| Region | Population | Share | Average age |
|---|---|---|---|
| Sangnam-dong | 31,367 | 12.8% | 42.8 yrs |
| Ballim-dong | 25,923 | 10.6% | 41.4 yrs |
| Daebang-dong | 21,857 | 8.9% | 43.7 yrs |
| Namyang-dong | 20,657 | 8.4% | 45.8 yrs |
| Sapa-dong | 18,091 | 7.4% | 46.5 yrs |
| Daewon-dong | 16,847 | 6.9% | 39.5 yrs |
| Gaeum-dong | 16,003 | 6.5% | 39 yrs |
| Jungang-dong | 15,690 | 6.4% | 40.1 yrs |
| Yongho-dong | 14,477 | 5.9% | 41.4 yrs |
| Seongju-dong | 13,277 | 5.4% | 41.8 yrs |
| Banji-dong | 11,705 | 4.8% | 49.3 yrs |
| Sinwol-dong | 10,021 | 4.1% | 48.2 yrs |
| Anmin-dong | 8,862 | 3.6% | 41.8 yrs |
| Sinchon-dong | 5,736 | 2.3% | 48.9 yrs |
| Namsan-dong | 3,284 | 1.3% | 41.9 yrs |
| Nae-dong | 3,237 | 1.3% | 46.4 yrs |
| Sapajeong-dong | 2,542 | 1% | 35.4 yrs |
| Oe-dong | 2,323 | 0.9% | 43.3 yrs |
| Gaeumjeong-dong | 1,484 | 0.6% | 40.9 yrs |
| Cheonseon-dong | 904 | 0.4% | 48 yrs |
| Gwihyeon-dong | 302 | 0.1% | 28.5 yrs |
| Gwisan-dong | 286 | 0.1% | 61.4 yrs |
| Yanggok-dong | 152 | 0.1% | 63.2 yrs |
| Bulmosan-dong | 118 | 0% | 58.4 yrs |
| Gwigok-dong | 60 | 0% | 58.8 yrs |
| Bansong-dong | 15 | 0% | 67.3 yrs |
| Seongsan-dong | 15 | 0% | 45.1 yrs |
| Ungnam-dong | 14 | 0% | 51.4 yrs |
| Towol-dong | 12 | 0% | 72.9 yrs |
| Namji-dong | 9 | 0% | 54.4 yrs |
| Sangbok-dong | 7 | 0% | 68.7 yrs |
| Dudae-dong | 5 | 0% | 35.4 yrs |
| Toechon-dong | 5 | 0% | 71.8 yrs |
| Changgok-dong | 3 | 0% | 64.7 yrs |
| Samjeongja-dong | 1 | 0% | 43 yrs |
| Wanam-dong | 1 | 0% | 68 yrs |
The top three areas hold 32.3% of the population of Seongsan-gu, Changwon-si.
Other regions
Other districts in Gyeongsangnam
16Frequently asked questions❓
Seongsan-gu, Changwon-si has 245,292 residents as of June 2026., 1,053 more than a year earlier.
Sangnam-dong, home to 31,367 residents — 12.8% of Seongsan-gu, Changwon-si.
It is 43.1 as of June 2026., 2.5 years below the national average of 45.6. Among its neighborhoods, Gwihyeon-dong is youngest at 28.5 and Towol-dong oldest at 72.9.
It fell 1.9% over 4 years, from 250,029 in 2022 to 245,292 in June 2026.
This is resident registration data from Korea's Ministry of the Interior and Safety. Figures are as of the end of June 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 🌐
- Resident registration data, Ministry of the Interior and SafetyKOGL Type 1 · as of June 2026 · updated monthly