Total population466,625people
Households192,707households
Average age43yrs
Sex ratioMale225,769peopleFemale240,856people48.4%51.6%
Population change
Change over time
4-year trendUnit: people
483,644 in 2022466,625 in 2026
Down 3.5% over the past 4 years.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 225,769Female 240,856
Age structure
Unit: %
Youth 12.0%Working age 70.6%Seniors 17.4%
50s is the largest group, at 78,625 people.
Population ranking
Population by region
As of September 2026- YoungestDaejang-dong37.1 yrs
- OldestSeogun-dong62 yrs
| Region | Share | ||
|---|---|---|---|
| Jeongja-dong | 72,720 | 15.6% | 43.1 yrs |
| Yatap-dong | 58,411 | 12.5% | 45.3 yrs |
| Seohyeon-dong | 46,456 | 10% | 42.7 yrs |
| Gumi-dong | 43,249 | 9.3% | 45.5 yrs |
| Sunae-dong | 41,213 | 8.8% | 41 yrs |
| Imae-dong | 37,179 | 8% | 43.1 yrs |
| Baekhyeon-dong | 29,955 | 6.4% | 43 yrs |
| Geumgok-dong | 24,532 | 5.3% | 45.5 yrs |
| Bundang-dong | 24,349 | 5.2% | 43.9 yrs |
| Sampyeong-dong | 23,453 | 5% | 41.2 yrs |
| Pangyo-dong | 22,359 | 4.8% | 39.3 yrs |
| Unjung-dong | 20,684 | 4.4% | 41.7 yrs |
| Daejang-dong | 17,864 | 3.8% | 37.1 yrs |
| Gungnae-dong | 2,074 | 0.4% | 49.9 yrs |
| Yul-dong | 1,177 | 0.3% | 38.4 yrs |
| Dongwon-dong | 642 | 0.1% | 51.4 yrs |
| Seogun-dong | 235 | 0.1% | 62 yrs |
| Hasanun-dong | 73 | 0% | 42.4 yrs |
The top three areas hold 38.1% of the population of Bundang-gu, Seongnam-si.
Frequently asked questionsβ
Bundang-gu, Seongnam-si has 466,625 residents as of September 2026., 3,238 fewer than a year earlier.
Jeongja-dong, home to 72,720 residents (15.6% of Bundang-gu, Seongnam-si).
It is 43 as of September 2026., 2.7 years below the national average of 45.7. Among its neighborhoods, Daejang-dong is youngest at 37.1 and Seogun-dong oldest at 62.
It fell 3.5% over 4 years, from 483,644 in 2022 to 466,625 in September 2026.
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