Map of Sanmu, Japan

Sanmu is a city in Chiba, Japan, with a population of about 48,444. It lies at 35.6276°N, 140.4176°E. Sanmu is about 66 km (41 mi) east of Tokyo, the capital. The nearest city on our map is Yachimata, 9 km to the west.

Sanmu at a glance

Where is Sanmu?

• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 45 min on the shortest day to 14 h 34 min on the longest day (around 21 December and 21 June).

Cities near Sanmu

• Yachimata — 9 km west
• Tōgane — 10 km southwest
• Ōami — 15 km southwest
• Sōsa — 16 km northeast
• Sakura — 19 km northwest
• Narita — 20 km northwest
• Yotsukaidō — 23 km west
• Asahi — 23 km northeast
• Mobara — 25 km southwest
• Chiba — 27 km west

Largest cities in Chiba

• Chiba — 979,768
• Matsudo — 498,575
• Kashiwa — 433,436
• Ichihara — 283,531
• Nagareyama — 200,136
• Yachiyo — 199,498
• Narashino — 176,197
• Sakura — 173,740
• Urayasu — 171,362
• Noda — 154,114

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.