Total population985,013people
Households464,555households
Average age45.9yrs
Sex ratioMale498,147peopleFemale486,866people50.6%49.4%
Population change
Change over time
4-year trendUnit: people
1,024,964 in 2022985,013 in 2026
Down 3.9% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in6,454people
Moved out7,267people
Net migrationβ813people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gimhae-si | 309 |
| Jinju-si | 127 |
| Haman-gun | 99 |
| Busanjin-gu, Busan | 71 |
| Yangsan-si | 68 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Gimhae-si | 418 |
| Gangseo-gu, Busan | 142 |
| Jinju-si | 134 |
| Haman-gun | 91 |
| Busanjin-gu, Busan | 88 |
Outflows exceeded inflows in every one of the past 12 months, for a net loss of 6,696.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 498,147Female 486,866
Age structure
Unit: %
Youth 10.4%Working age 67.7%Seniors 21.9%
50s is the largest group, at 174,525 people.
Population ranking
Population by region
As of September 2026| Region | Share | ||
|---|---|---|---|
| Seongsan-gu | 244,872 | 24.9% | 43.2 yrs |
| Uichang-gu | 209,833 | 21.3% | 45.7 yrs |
| Jinhae-gu | 182,463 | 18.5% | 45 yrs |
| Masanhappo-gu | 174,168 | 17.7% | 48.7 yrs |
| Masanhoewon-gu | 173,677 | 17.6% | 48.2 yrs |
The top three areas hold 64.7% of the population of Changwon-si, Gyeongsangnam-do.
Frequently asked questionsβ
Changwon-si, Gyeongsangnam-do has 985,013 residents as of September 2026., 8,517 fewer than a year earlier.
Seongsan-gu, home to 244,872 residents (24.9% of Changwon-si, Gyeongsangnam-do).
It is 45.9 as of September 2026., close to the national average of 45.7. Among its districts, Seongsan-gu is youngest at 43.2 and Masanhappo-gu oldest at 48.7.
It fell 3.9% over 4 years, from 1,024,964 in 2022 to 985,013 in September 2026.
As of August 2026, the most people moved in from Gimhae-si (309) and the most moved out to Gimhae-si (418). Outflows exceeded inflows in every one of the past 12 months, for a net loss of 6,696.
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