Map of Minamiuonuma, Japan

Minamiuonuma is a city in Niigata, Japan, with a population of about 55,354. It lies at 37.0826°N, 138.8741°E. Minamiuonuma is about 171 km (106 mi) northwest of Tokyo, the capital. The nearest city on our map is Tōkamachi, 11 km to the northwest.

Minamiuonuma at a glance

Where is Minamiuonuma?

• The 10th largest city in Niigata on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 37 min on the shortest day to 14 h 43 min on the longest day (around 21 December and 21 June).

Cities near Minamiuonuma

• Tōkamachi — 11 km northwest
• Uonuma — 20 km northeast
• Ojiya — 25 km north
• Nagaoka — 41 km north
• Kashiwazaki — 43 km northwest
• Mitsuke — 50 km north
• Numata — 52 km south
• Jōetsu — 57 km west
• Nakano — 58 km southwest
• Sanjō — 60 km north

Largest cities in Niigata

• Niigata — 797,591
• Nagaoka — 266,936
• Jōetsu — 189,430
• Shibata — 96,236
• Sanjō — 94,642
• Kashiwazaki — 86,183
• Tsubame — 77,382
• Niitsu-honchō — 65,910
• Murakami — 58,300
• Tōkamachi — 53,333

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.