Okaya Population 2026

Okaya has a population of 54,286, making it the #511 biggest city in 🇯🇵 Japan, located in Nagano. It is about 179× smaller than Tokyo, the country's biggest city.

Location of Okaya (capital Tokyo shown for reference). Boundaries: Natural Earth.

Population (city proper)

54,286

Rank in Japan

#511

Coordinates

36.06°N, 138.05°E

~773 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

154 km

96 miles, straight line

Other big cities in Nagano

City	Population	Rank in Japan
Nagano	372,760	#59
Matsumoto	241,145	#104
Ueda	157,480	#162
Iida	101,536	#268
Saku	99,131	#276
Azumino	94,222	#292
Ina	68,177	#411
Shiojiri	67,241	#417

Cities near Okaya

Shimosuwa20,055 people · ~4 km away
Suwa48,972 people · ~6 km away
Shiojiri67,241 people · ~9 km away
Tatsuno18,951 people · ~9 km away
Chino56,400 people · ~12 km away
Kinoshita24,989 people · ~18 km away

FAQ

What is the population of Okaya?

Okaya has a population of 54,286 (city proper, latest official figure via GeoNames), making it the #511 biggest city in Japan.

What region is Okaya in?

Okaya is located in Nagano, Japan.

Is Okaya the capital of Japan?

No, the capital of Japan is Tokyo, about 154 km away.

Sources & notes

Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.

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