Total population46,589people
Households26,045households
Average age57.5yrs
Sex ratioMale23,232peopleFemale23,357people49.9%50.1%
Population change
Change over time
4-year trendUnit: people
50,296 in 202246,589 in 2026
Down 7.4% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in249people
Moved out245people
Net migration4people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gunsan-si, Jeonbuk-do | 24 |
| Suwon-si, Gyeonggi | 9 |
| Cheonan-si | 9 |
| Boryeong-si | 5 |
| Iksan-si, Jeonbuk-do | 5 |
Top destinations
Unit: people
Outflows exceeded inflows in 8 of the past 12 months, for a net loss of 137.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 23,232Female 23,357
Age structure
Unit: %
Youth 5.7%Working age 50.3%Seniors 43.9%
60s is the largest group, at 10,365 people.
Population ranking
Population by region
As of September 2026- YoungestSeocheon-eup50.8 yrs
- OldestSicho-myeon65.7 yrs
| Region | Share | ||
|---|---|---|---|
| Seocheon-eup | 12,330 | 26.5% | 50.8 yrs |
| Janghang-eup | 10,301 | 22.1% | 53.5 yrs |
| Maseo-myeon | 4,335 | 9.3% | 61.1 yrs |
| Seo-myeon | 3,857 | 8.3% | 58.3 yrs |
| Biin-myeon | 2,684 | 5.8% | 62.6 yrs |
| Hansan-myeon | 2,217 | 4.8% | 63.2 yrs |
| Hwayang-myeon | 1,992 | 4.3% | 64.9 yrs |
| Jongcheon-myeon | 1,940 | 4.2% | 64 yrs |
| Pangyo-myeon | 1,870 | 4% | 64.9 yrs |
| Gisan-myeon | 1,440 | 3.1% | 64.4 yrs |
| Masan-myeon | 1,365 | 2.9% | 63.2 yrs |
| Munsan-myeon | 1,153 | 2.5% | 65.6 yrs |
| Sicho-myeon | 1,105 | 2.4% | 65.7 yrs |
The top three areas hold 57.9% of the population of Seocheon-gun, Chungcheongnam-do.
Want to explore Seocheon-gun's demographics in more detail?See more Seocheon-gun statistics on GData
Frequently asked questionsβ
Seocheon-gun, Chungcheongnam-do has 46,589 residents as of September 2026., 962 fewer than a year earlier.
Seocheon-eup, home to 12,330 residents (26.5% of Seocheon-gun, Chungcheongnam-do).
It is 57.5 as of September 2026., 11.8 years above the national average of 45.7. Among its towns and townships, Seocheon-eup is youngest at 50.8 and Sicho-myeon oldest at 65.7.
It fell 7.4% over 4 years, from 50,296 in 2022 to 46,589 in September 2026.
As of August 2026, the most people moved in from Gunsan-si, Jeonbuk-do (24) and the most moved out to Gunsan-si, Jeonbuk-do (41). Outflows exceeded inflows in 8 of the past 12 months, for a net loss of 137.
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