Isumi Population 2026

Isumi has a population of 35,544, making it the #724 biggest city in 🇯🇵 Japan, located in Chiba. It is about 274× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

35,544

Rank in Japan

#724

Coordinates

35.23°N, 140.40°E

~1 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

82 km

51 miles, straight line

Other big cities in Chiba

City	Population	Rank in Japan
Chiba	979,768	#13
Matsudo	498,575	#31
Kashiwa	433,436	#41
Ichihara	283,531	#83
Nagareyama	200,136	#119
Yachiyo	199,498	#120
Narashino	176,197	#138
Sakura	173,740	#141

Cities near Isumi

Ōhara20,226 people · ~2 km away
Katsuura16,927 people · ~12 km away
Mobara88,330 people · ~24 km away
Kamogawa32,116 people · ~31 km away
Ōamishirasato48,129 people · ~32 km away
Ōami53,239 people · ~33 km away

FAQ

What is the population of Isumi?

Isumi has a population of 35,544 (city proper, latest official figure via GeoNames), making it the #724 biggest city in Japan.

What region is Isumi in?

Isumi is located in Chiba, Japan.

Is Isumi the capital of Japan?

No, the capital of Japan is Tokyo, about 82 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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