Map of Uonuma, Japan

Uonuma is a city in Niigata, Japan, with a population of about 34,483. It lies at 37.2449°N, 138.9623°E. Uonuma is about 185 km (115 mi) north of Tokyo, the capital. The nearest city on our map is Ojiya, 16 km to the northwest.

Uonuma at a glance

Where is Uonuma?

• The 19th largest city in Niigata on this site.
• Located in the Northern and Eastern hemispheres.
• Daylight ranges from about 9 h 36 min on the shortest day to 14 h 44 min on the longest day (around 21 December and 21 June).

Cities near Uonuma

• Ojiya — 16 km northwest
• Minamiuonuma — 20 km southwest
• Tōkamachi — 21 km southwest
• Nagaoka — 25 km northwest
• Mitsuke — 32 km north
• Kashiwazaki — 39 km west
• Sanjō — 41 km north
• Tsubame — 47 km north
• Gosen — 57 km north
• Shirone — 58 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
• Minamiuonuma — 55,354

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.