Total population368,721people
Households140,846households
Average age42.2yrs
Sex ratioMale179,371peopleFemale189,350people48.6%51.4%
Population change
Change over time
4-year trendUnit: people
376,695 in 2022368,721 in 2026
Down 2.1% over the past 4 years.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 179,371Female 189,350
Age structure
Unit: %
Youth 13.4%Working age 69.8%Seniors 16.8%
40s is the largest group, at 64,314 people.
Population ranking
Population by region
As of September 2026- YoungestPungdeokcheon-dong40.5 yrs
- OldestGogi-dong47.2 yrs
| Region | Share | ||
|---|---|---|---|
| Sanghyeon-dong | 79,036 | 21.4% | 41.7 yrs |
| Jukjeon-dong | 72,170 | 19.6% | 43.3 yrs |
| Pungdeokcheon-dong | 71,261 | 19.3% | 40.5 yrs |
| Seongbok-dong | 54,513 | 14.8% | 43.4 yrs |
| Dongcheon-dong | 46,754 | 12.7% | 41.3 yrs |
| Sinbong-dong | 40,961 | 11.1% | 42.8 yrs |
| Gogi-dong | 4,026 | 1.1% | 47.2 yrs |
The top three areas hold 60.3% of the population of Suji-gu, Yongin-si.
Frequently asked questionsβ
Suji-gu, Yongin-si has 368,721 residents as of September 2026., 6,060 fewer than a year earlier.
Sanghyeon-dong, home to 79,036 residents (21.4% of Suji-gu, Yongin-si).
It is 42.2 as of September 2026., 3.5 years below the national average of 45.7. Among its neighborhoods, Pungdeokcheon-dong is youngest at 40.5 and Gogi-dong oldest at 47.2.
It fell 2.1% over 4 years, from 376,695 in 2022 to 368,721 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