Total population41,073people
Households23,181households
Average age57.4yrs
Sex ratioMale20,101peopleFemale20,972people48.9%51.1%
Population change
Change over time
4-year trendUnit: people
41,919 in 202241,073 in 2026
Down 2% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in213people
Moved out201people
Net migration12people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Changwon-si | 14 |
| Sacheon-si | 14 |
| Jinju-si | 13 |
| Nam-gu, Busan | 5 |
| Yangsan-si | 5 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Changwon-si | 14 |
| Jinju-si | 12 |
| Sacheon-si | 12 |
| Hongseong-gun, Chungcheongnam-do | 8 |
| Gimhae-si | 5 |
Inflows exceeded outflows in every one of the past 12 months, for a net gain of 2,468.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 20,101Female 20,972
Age structure
Unit: %
Youth 5.9%Working age 50.6%Seniors 43.5%
60s is the largest group, at 9,410 people.
Population ranking
Population by region
As of September 2026- YoungestNamhae-eup49.3 yrs
- OldestSeolcheon-myeon64.5 yrs
| Region | Share | ||
|---|---|---|---|
| Namhae-eup | 12,710 | 30.9% | 49.3 yrs |
| Changseon-myeon | 5,530 | 13.5% | 61 yrs |
| Samdong-myeon | 3,800 | 9.3% | 60.4 yrs |
| Idong-myeon | 3,527 | 8.6% | 61.8 yrs |
| Nam-myeon | 3,412 | 8.3% | 60.3 yrs |
| Gohyeon-myeon | 3,212 | 7.8% | 62 yrs |
| Seolcheon-myeon | 2,633 | 6.4% | 64.5 yrs |
| Seo-myeon | 2,562 | 6.2% | 61.5 yrs |
| Mijo-myeon | 2,109 | 5.1% | 57.5 yrs |
| Sangju-myeon | 1,578 | 3.8% | 58.4 yrs |
The top three areas hold 53.7% of the population of Namhae-gun, Gyeongsangnam-do.
Frequently asked questionsβ
Namhae-gun, Gyeongsangnam-do has 41,073 residents as of September 2026., 1,791 more than a year earlier.
Namhae-eup, home to 12,710 residents (30.9% of Namhae-gun, Gyeongsangnam-do).
It is 57.4 as of September 2026., 11.7 years above the national average of 45.7. Among its towns and townships, Namhae-eup is youngest at 49.3 and Seolcheon-myeon oldest at 64.5.
It fell 2% over 4 years, from 41,919 in 2022 to 41,073 in September 2026.
As of August 2026, the most people moved in from Changwon-si (14) and the most moved out to Changwon-si (14). Inflows exceeded outflows in every one of the past 12 months, for a net gain of 2,468.
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