Total population107,796people
Households56,706households
Average age49.1yrs
Sex ratioMale54,781peopleFemale53,015people50.8%49.2%
Population change
Change over time
4-year trendUnit: people
109,891 in 2022107,796 in 2026
Down 1.9% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in846people
Moved out833people
Net migration13people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Jinju-si | 151 |
| Changwon-si | 39 |
| Gimhae-si | 22 |
| Geoje-si | 15 |
| Goseong-gun | 15 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Jinju-si | 129 |
| Changwon-si | 24 |
| Gimhae-si | 14 |
| Goseong-gun | 14 |
| Namhae-gun | 14 |
Inflows exceeded outflows in 8 of the past 12 months, for a net gain of 252.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 54,781Female 53,015
Age structure
Unit: %
Youth 9.3%Working age 62.9%Seniors 27.7%
50s is the largest group, at 19,399 people.
Population ranking
Population by region
As of September 2026- YoungestSanam-myeon40.3 yrs
- OldestDaepo-dong65.4 yrs
| Region | Share | ||
|---|---|---|---|
| Sanam-myeon | 18,325 | 17% | 40.3 yrs |
| Sacheon-eup | 16,468 | 15.3% | 46.3 yrs |
| Jeongdong-myeon | 13,272 | 12.3% | 43.3 yrs |
| Yonghyeon-myeon | 8,735 | 8.1% | 48.7 yrs |
| Beolli-dong | 7,065 | 6.6% | 53.2 yrs |
| Yonggang-dong | 6,753 | 6.3% | 46.9 yrs |
| Donggeum-dong | 6,406 | 5.9% | 49.1 yrs |
| Hyangchon-dong | 4,901 | 4.5% | 50.2 yrs |
| Seopo-myeon | 3,100 | 2.9% | 62.2 yrs |
| Gonyang-myeon | 2,937 | 2.7% | 61.9 yrs |
| Gonmyeong-myeon | 2,574 | 2.4% | 62.9 yrs |
| Seongu-dong | 2,470 | 2.3% | 58.3 yrs |
| Jungnim-dong | 2,243 | 2.1% | 50.8 yrs |
| Seo-dong | 1,732 | 1.6% | 61.1 yrs |
| Dongnim-dong | 1,498 | 1.4% | 52.5 yrs |
| Dong-dong | 1,446 | 1.3% | 63 yrs |
| Chukdong-myeon | 1,437 | 1.3% | 61.6 yrs |
| Songpo-dong | 1,280 | 1.2% | 60 yrs |
| Daebang-dong | 1,023 | 0.9% | 56.3 yrs |
| Bongnam-dong | 535 | 0.5% | 57.7 yrs |
| Igeum-dong | 454 | 0.4% | 48.6 yrs |
| Jwaryong-dong | 414 | 0.4% | 52.9 yrs |
| Siran-dong | 399 | 0.4% | 63.7 yrs |
| Noryong-dong | 327 | 0.3% | 61.8 yrs |
| Ihol-dong | 287 | 0.3% | 62.5 yrs |
| Sinbyeok-dong | 283 | 0.3% | 62.9 yrs |
| Daepo-dong | 259 | 0.2% | 65.4 yrs |
| Seogeum-dong | 223 | 0.2% | 57 yrs |
| Sinsu-dong | 209 | 0.2% | 65.3 yrs |
| Neukdo-dong | 162 | 0.2% | 64.5 yrs |
| Gungji-dong | 153 | 0.1% | 62.5 yrs |
| Baekcheon-dong | 141 | 0.1% | 65.1 yrs |
| Waryong-dong | 126 | 0.1% | 59.6 yrs |
| Mado-dong | 100 | 0.1% | 62.6 yrs |
| Sadeung-dong | 59 | 0.1% | 61.9 yrs |
The top three areas hold 44.6% of the population of Sacheon-si, Gyeongsangnam-do.
Frequently asked questionsβ
Sacheon-si, Gyeongsangnam-do has 107,796 residents as of September 2026., 430 fewer than a year earlier.
Sanam-myeon, home to 18,325 residents (17.0% of Sacheon-si, Gyeongsangnam-do).
It is 49.1 as of September 2026., 3.4 years above the national average of 45.7. Among its neighborhoods, Sanam-myeon is youngest at 40.3 and Daepo-dong oldest at 65.4.
It fell 1.9% over 4 years, from 109,891 in 2022 to 107,796 in September 2026.
As of August 2026, the most people moved in from Jinju-si (151) and the most moved out to Jinju-si (129). Inflows exceeded outflows in 8 of the past 12 months, for a net gain of 252.
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