Koga Population 2026
Koga has a population of 18,723, making it the #1094 biggest city in 🇯🇵 Japan, located in Fukuoka. It is about 520× smaller than Tokyo, the country's biggest city.
Population (city proper)
18,723
Rank in Japan
#1094
Coordinates
33.86°N, 130.69°E
~4 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
847 km
526 miles, straight line
Other big cities in Fukuoka
| City | Population | Rank in Japan |
|---|---|---|
| Fukuoka | 1,612,392 | #6 |
| Kitakyushu | 940,978 | #14 |
| Kurume | 303,579 | #78 |
| Ōmuta | 131,974 | #202 |
| Iizuka | 126,364 | #211 |
| Kasuga | 111,023 | #247 |
| Chikushino-shi | 103,311 | #262 |
| Ōnojō | 102,085 | #266 |
Cities near Koga
FAQ
What is the population of Koga?
Koga has a population of 18,723 (city proper, latest official figure via GeoNames), making it the #1094 biggest city in Japan.
What region is Koga in?
Koga is located in Fukuoka, Japan.
Is Koga the capital of Japan?
No, the capital of Japan is Tokyo, about 847 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.