Map of Saku, Japan

Saku is a city in Nagano, Japan, with a population of about 99,131. It lies at 36.2167°N, 138.4833°E. Saku is about 124 km (77 mi) northwest of Tokyo, the capital. The nearest city on our map is Komoro, 12 km to the north.

Saku at a glance

Where is Saku?

• The 5th largest city in Nagano on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 41 min on the shortest day to 14 h 38 min on the longest day (around 21 December and 21 June).

Cities near Saku

• Komoro — 12 km north
• Ueda — 27 km northwest
• Tomioka — 37 km east
• Chino — 39 km southwest
• Suwa — 39 km southwest
• Annaka — 39 km east
• Okaya — 43 km southwest
• Hokuto — 43 km south
• Matsumoto — 46 km west
• Shiojiri — 48 km west

Largest cities in Nagano

• Nagano — 372,760
• Matsumoto — 241,145
• Ueda — 157,480
• Iida — 101,536
• Azumino — 94,222
• Ina — 68,177
• Shiojiri — 67,241
• Chikuma — 59,381
• Chino — 56,400
• Okaya — 54,286

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.