Map of Koshigaya, Japan

Koshigaya is a city in Saitama, Japan, with a population of about 345,353. It lies at 35.8903°N, 139.7892°E. Koshigaya is about 24 km (15 mi) north of Tokyo, the capital. The nearest city on our map is Yoshikawa, 5 km to the east.

Koshigaya at a glance

Where is Koshigaya?

• The 4th largest city in Saitama on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 43 min on the shortest day to 14 h 36 min on the longest day (around 21 December and 21 June).

Cities near Koshigaya

• Yoshikawa — 5 km east
• Sōka — 6 km south
• Hatogaya-honchō — 8 km southwest
• Yashio — 9 km southeast
• Noda — 10 km northeast
• Misato — 10 km southeast
• Nagareyama — 11 km east
• Kasukabe — 11 km north
• Iwatsuki — 12 km northwest
• Kawaguchi — 12 km southwest

Largest cities in Saitama

• Saitama — 1,324,854
• Kawaguchi — 607,373
• Kawagoe — 354,571
• Tokorozawa — 344,194
• Sōka — 249,645
• Kasukabe — 229,792
• Ageoshimo — 226,940
• Kumagaya — 195,277
• Niiza — 166,017
• Sayama — 160,843

Largest cities in Japan

• Tokyo — 9,733,276
• Yokohama — 3,777,491
• Osaka — 2,753,862
• Nagoya — 2,332,176
• Sapporo — 1,973,832
• Fukuoka — 1,612,392
• Kawasaki — 1,538,262
• Kobe — 1,525,152
• Kyoto — 1,463,723
• Saitama — 1,324,854

Map of Japan and all its cities →

Sources: place names, coordinates, populations and time zones from GeoNames (CC BY 4.0, data retrieved October 2026). Population figures are the latest values recorded in GeoNames; depending on the country they refer to the city proper, a municipality or a wider urban area, so they can differ from census or metro-area figures. Map © OpenStreetMap contributors.