Iiyama Population 2026

Iiyama has a population of 20,118, making it the #1059 biggest city in 🇯🇵 Japan, located in Nagano. It is about 484× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

20,118

Rank in Japan

#1059

Coordinates

36.85°N, 138.37°E

~311 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

175 km

109 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 Iiyama

Nakano42,664 people · ~11 km away
Arai27,481 people · ~21 km away
Myoko30,383 people · ~22 km away
Suzaka54,022 people · ~23 km away
Nagano372,760 people · ~28 km away
Jōetsu189,430 people · ~35 km away

FAQ

What is the population of Iiyama?

Iiyama has a population of 20,118 (city proper, latest official figure via GeoNames), making it the #1059 biggest city in Japan.

What region is Iiyama in?

Iiyama is located in Nagano, Japan.

Is Iiyama the capital of Japan?

No, the capital of Japan is Tokyo, about 175 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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