Total population40,293people
Households23,892households
Average age57.2yrs
Sex ratioMale21,144peopleFemale19,149people52.5%47.5%
Population change
Change over time
4-year trendUnit: people
42,740 in 202240,293 in 2026
Down 5.7% over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in202people
Moved out243people
Net migrationβ41people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Dalseo-gu, Daegu | 31 |
| Dalseong-gun, Daegu | 21 |
| Buk-gu, Daegu | 11 |
| Gyeongsan-si | 8 |
| Dong-gu, Daegu | 7 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Dalseo-gu, Daegu | 43 |
| Dalseong-gun, Daegu | 30 |
| Dong-gu, Daegu | 11 |
| Chilgok-gun | 11 |
| Gumi-si | 10 |
Outflows exceeded inflows in 8 of the past 12 months, for a net loss of 151.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 21,144Female 19,149
Age structure
Unit: %
Youth 5.3%Working age 52.5%Seniors 42.1%
60s is the largest group, at 10,695 people.
Population ranking
Population by region
As of September 2026- YoungestSeongju-eup49.4 yrs
- OldestGeumsugangsan-myeon63.5 yrs
| Region | Share | ||
|---|---|---|---|
| Seongju-eup | 13,012 | 32.3% | 49.4 yrs |
| Seonnam-myeon | 5,707 | 14.2% | 59.2 yrs |
| Chojeon-myeon | 4,019 | 10% | 59.6 yrs |
| Yongam-myeon | 3,428 | 8.5% | 61.3 yrs |
| Suryun-myeon | 3,097 | 7.7% | 62.1 yrs |
| Wolhang-myeon | 3,080 | 7.6% | 60.1 yrs |
| Byeokjin-myeon | 2,735 | 6.8% | 62.1 yrs |
| Daega-myeon | 2,205 | 5.5% | 61.7 yrs |
| Gacheon-myeon | 1,859 | 4.6% | 63 yrs |
| Geumsugangsan-myeon | 1,151 | 2.9% | 63.5 yrs |
The top three areas hold 56.4% of the population of Seongju-gun, Gyeongsangbuk-do.
Frequently asked questionsβ
Seongju-gun, Gyeongsangbuk-do has 40,293 residents as of September 2026., 659 fewer than a year earlier.
Seongju-eup, home to 13,012 residents (32.3% of Seongju-gun, Gyeongsangbuk-do).
It is 57.2 as of September 2026., 11.5 years above the national average of 45.7. Among its towns and townships, Seongju-eup is youngest at 49.4 and Geumsugangsan-myeon oldest at 63.5.
It fell 5.7% over 4 years, from 42,740 in 2022 to 40,293 in September 2026.
As of August 2026, the most people moved in from Dalseo-gu, Daegu (31) and the most moved out to Dalseo-gu, Daegu (43). Outflows exceeded inflows in 8 of the past 12 months, for a net loss of 151.
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