Total population483,679people
Households208,177households
Average age42.9yrs
Sex ratioMale241,092peopleFemale242,587people49.8%50.2%
Population change
Change over time
4-year trendUnit: people
484,310 in 2022483,679 in 2026
Barely changed over the past 4 years.
Migration
As of August 2026Monthly Overview
Moved in3,767people
Moved out4,078people
Net migrationβ311people
Net migration by month
Unit: people
Net inflowNet outflow
Top origins
Unit: people
| Region | Moved in |
|---|---|
| Gangseo-gu, Seoul | 290 |
| Goyang-si | 172 |
| Yangcheon-gu, Seoul | 97 |
| Yeongdeungpo-gu, Seoul | 73 |
| Bucheon-si | 67 |
Top destinations
Unit: people
| Region | Moved out |
|---|---|
| Goyang-si | 199 |
| Gangseo-gu, Seoul | 128 |
| Paju-si | 96 |
| Yangcheon-gu, Seoul | 66 |
| Bucheon-si | 60 |
Outflows exceeded inflows in 9 of the past 12 months, for a net loss of 1,284.
Population structure
Population by age
As of September 2026Population by age and sex
Unit: people
Male 241,092Female 242,587
Age structure
Unit: %
Youth 13.2%Working age 69.0%Seniors 17.8%
40s is the largest group, at 90,280 people.
Population ranking
Population by region
As of September 2026- YoungestGurae-dong38.4 yrs
- OldestWolgot-myeon58 yrs
| Region | Share | ||
|---|---|---|---|
| Janggi-dong | 78,560 | 16.2% | 40.7 yrs |
| Pungmu-dong | 59,433 | 12.3% | 42.3 yrs |
| Gochon-eup | 52,019 | 10.8% | 40.7 yrs |
| Unyang-dong | 48,749 | 10.1% | 39.9 yrs |
| Gurae-dong | 45,906 | 9.5% | 38.4 yrs |
| Masan-dong | 35,475 | 7.3% | 39.8 yrs |
| Tongjin-eup | 34,530 | 7.1% | 48 yrs |
| Yangchon-eup | 30,379 | 6.3% | 47.4 yrs |
| Gamjeong-dong | 20,886 | 4.3% | 45.9 yrs |
| Sau-dong | 20,484 | 4.2% | 47.2 yrs |
| Geolpo-dong | 19,242 | 4% | 40.1 yrs |
| Bukbyeon-dong | 16,614 | 3.4% | 48 yrs |
| Daegot-myeon | 8,845 | 1.8% | 55.7 yrs |
| Haseong-myeon | 7,460 | 1.5% | 56.6 yrs |
| Wolgot-myeon | 5,097 | 1.1% | 58 yrs |
The top three areas hold 39.3% of the population of Gimpo-si, Gyeonggi.
Frequently asked questionsβ
Gimpo-si, Gyeonggi has 483,679 residents as of September 2026., 942 fewer than a year earlier.
Janggi-dong, home to 78,560 residents (16.2% of Gimpo-si, Gyeonggi).
It is 42.9 as of September 2026., 2.8 years below the national average of 45.7. Among its neighborhoods, Gurae-dong is youngest at 38.4 and Wolgot-myeon oldest at 58.
It fell 0.1% over 4 years, from 484,310 in 2022 to 483,679 in September 2026.
As of August 2026, the most people moved in from Gangseo-gu, Seoul (290) and the most moved out to Goyang-si (199). Outflows exceeded inflows in 9 of the past 12 months, for a net loss of 1,284.
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