Total population2,138,938people
Households1,072,860households
Average age46.7yrs
Sex ratioMale1,098,834peopleFemale1,040,104people51.4%48.6%
Population change
Change over time
4-year trendUnit: people
2,121,082 in 20222,138,938 in 2026
Up 0.8% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in18,033people
Moved out17,593people
Net migration440people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gyeonggi | 2,883 |
| Seoul | 1,328 |
| Daejeon | 938 |
| Incheon | 581 |
| Chungcheongbuk-do | 445 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Gyeonggi | 2,608 |
| Seoul | 1,425 |
| Daejeon | 1,021 |
| Chungcheongbuk-do | 471 |
| Incheon | 457 |
Inflows exceeded outflows in every one of the past 12 months, for a net gain of 9,807.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 1,098,834Female 1,040,104
Age structure
Unit: %
Youth 10.4%Working age 65.4%Seniors 24.2%
50s is the largest group, at 353,624 people.
Population ranking
Population by region
As of September 2026| Region | Share | ||
|---|---|---|---|
| Cheonan-si | 666,584 | 31.2% | 42.5 yrs |
| Asan-si | 365,299 | 17.1% | 42 yrs |
| Dangjin-si | 172,423 | 8.1% | 46.5 yrs |
| Seosan-si | 170,780 | 8% | 47.2 yrs |
| Nonsan-si | 105,655 | 4.9% | 52.1 yrs |
| Hongseong-gun | 101,814 | 4.8% | 48.6 yrs |
| Gongju-si | 99,481 | 4.7% | 51.8 yrs |
| Boryeong-si | 91,035 | 4.3% | 52.3 yrs |
| Yesan-gun | 78,133 | 3.7% | 53.6 yrs |
| Taean-gun | 58,858 | 2.8% | 55.6 yrs |
| Buyeo-gun | 57,591 | 2.7% | 57 yrs |
| Geumsan-gun | 48,749 | 2.3% | 54.9 yrs |
| Seocheon-gun | 46,589 | 2.2% | 57.5 yrs |
| Gyeryong-si | 45,937 | 2.1% | 42.8 yrs |
| Cheongyang-gun | 30,010 | 1.4% | 56.6 yrs |
The top three areas hold 56.3% of the population of Chungcheongnam-do.
Frequently asked questionsβ
Chungcheongnam-do has 2,138,938 residents as of September 2026., 2,743 more than a year earlier.
Cheonan-si, home to 666,584 residents (31.2% of Chungcheongnam-do).
It is 46.7 as of September 2026., 1 years above the national average of 45.7. Among its cities and counties, Asan-si is youngest at 42 and Seocheon-gun oldest at 57.5.
It rose 0.8% over 4 years, from 2,121,082 in 2022 to 2,138,938 in September 2026.
As of August 2026, the most people moved in from Gyeonggi (2,883) and the most moved out to Gyeonggi (2,608). Inflows exceeded outflows in every one of the past 12 months, for a net gain of 9,807.
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