Total population320,360people
Households152,460households
Average age45.4yrs
Sex ratioMale163,534peopleFemale156,826people51.0%49.0%
Population change
Change over time
4-year trendUnit: people
347,832 in 2022320,360 in 2026
Down 7.9% over the past 4 years.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 163,534Female 156,826
Age structure
Unit: %
Youth 8.5%Working age 72.3%Seniors 19.2%
50s is the largest group, at 63,639 people.
Population ranking
Population by region
As of September 2026- YoungestSa-dong43 yrs
- OldestPalgogil-dong58.3 yrs
| Region | Share | ||
|---|---|---|---|
| Sa-dong | 97,356 | 30.4% | 43 yrs |
| Bono-dong | 72,285 | 22.6% | 45.8 yrs |
| Wolpi-dong | 29,114 | 9.1% | 45.3 yrs |
| Il-dong | 25,102 | 7.8% | 46 yrs |
| Bugok-dong | 24,733 | 7.7% | 46.3 yrs |
| Seongpo-dong | 23,921 | 7.5% | 46 yrs |
| I-dong | 19,149 | 6% | 46.2 yrs |
| Geongeon-dong | 14,239 | 4.4% | 47.9 yrs |
| Suam-dong | 5,752 | 1.8% | 50.1 yrs |
| Palgogi-dong | 2,714 | 0.8% | 50.7 yrs |
| Jangsang-dong | 2,055 | 0.6% | 52.4 yrs |
| Sasa-dong | 1,908 | 0.6% | 54 yrs |
| Palgogil-dong | 1,600 | 0.5% | 58.3 yrs |
| Yangsang-dong | 292 | 0.1% | 56.5 yrs |
| Jangha-dong | 140 | 0% | 57.2 yrs |
The top three areas hold 62.0% of the population of Sangnok-gu, Ansan-si.
Frequently asked questionsβ
Sangnok-gu, Ansan-si has 320,360 residents as of September 2026., 3,631 fewer than a year earlier.
Sa-dong, home to 97,356 residents (30.4% of Sangnok-gu, Ansan-si).
It is 45.4 as of September 2026., close to the national average of 45.7. Among its neighborhoods, Sa-dong is youngest at 43 and Palgogil-dong oldest at 58.3.
It fell 7.9% over 4 years, from 347,832 in 2022 to 320,360 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