About Koshigaya
Koshigaya is a city located in Japan, in the Saitama Prefecture region. According to the latest available data (2026), the population of Koshigaya is approximately 341,784 residents, making it the #65 most populous city in Japan.
Globally, Koshigaya ranks #5,398 among the world's most populated cities.
Koshigaya City Statistics
| City | Koshigaya |
| Country |  Japan |
| Population | 341,784 |
| Global Rank | #5,398 |
| Rank in Japan | #65 of 360 cities |
| City Category | city |
| Region | Saitama Prefecture |
| Latitude | 35.9011 |
| Longitude | 139.7902 |
| Data Year | 2026 |
Where is Koshigaya Located?
Koshigaya is located in Japan, in the Saitama Prefecture region, at coordinates 35.9011° latitude and 139.7902° longitude. Koshigaya sits in the subtropics, typically enjoying warm temperatures year-round.
Nearby Cities
Other Cities in Japan
Largest Cities in Japan
| # | City | Population |
|---|---|---|
| 2 | Yokohama | 3,757,630 |
| 3 | Nagoya | 2,326,844 |
| 6 | Sapporo | 1,959,313 |
| 7 | Fukuoka | 1,603,043 |
| 8 | Kawasaki | 1,539,522 |
Frequently Asked Questions
What is the population of Koshigaya?
The population of Koshigaya is approximately 341,784 residents according to the latest available data (2026).
Where is Koshigaya located?
Koshigaya is located in Japan at approximately 35.9011° latitude and 139.7902° longitude.
Is Koshigaya one of the largest cities in Japan?
With a population of 341,784, Koshigaya is one of the notable urban areas in Japan. It ranks #65 out of 360 cities in the country.
