Total population1,442,838people
Households706,437households
Average age44.3yrs
Sex ratioMale718,413peopleFemale724,425people49.8%50.2%
Population change
Change over time
4-year trendUnit: people
1,448,240 in 20221,442,838 in 2026
Barely changed over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in15,747people
Moved out15,197people
Net migration550people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gyeonggi | 1,167 |
| Chungcheongnam-do | 1,021 |
| Seoul | 963 |
| Sejong | 617 |
| Chungcheongbuk-do | 568 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Gyeonggi | 1,134 |
| Seoul | 1,094 |
| Chungcheongnam-do | 938 |
| Chungcheongbuk-do | 576 |
| Sejong | 423 |
Net migration varied across the past 12 months, totaling +1,527.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 718,413Female 724,425
Age structure
Unit: %
Youth 10.6%Working age 69.5%Seniors 19.9%
50s is the largest group, at 241,386 people.
Population ranking
Population by region
As of September 2026| Region | Share | ||
|---|---|---|---|
| Seo-gu | 464,238 | 32.2% | 43.3 yrs |
| Yuseong-gu | 373,361 | 25.9% | 40.7 yrs |
| Jung-gu | 223,664 | 15.5% | 47.3 yrs |
| Dong-gu | 217,981 | 15.1% | 46.8 yrs |
| Daedeok-gu | 163,594 | 11.3% | 47.6 yrs |
The top three areas hold 73.6% of the population of Daejeon.
Frequently asked questionsβ
Daejeon has 1,442,838 residents as of September 2026., 1,242 more than a year earlier.
Seo-gu, home to 464,238 residents (32.2% of Daejeon).
It is 44.3 as of September 2026., 1.4 years below the national average of 45.7. Among its districts, Yuseong-gu is youngest at 40.7 and Daedeok-gu oldest at 47.6.
It fell 0.4% over 4 years, from 1,448,240 in 2022 to 1,442,838 in September 2026.
As of August 2026, the most people moved in from Gyeonggi (1,167) and the most moved out to Gyeonggi (1,134). Net migration varied across the past 12 months, totaling +1,527.
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