Kamaishi Population 2026

Kamaishi has a population of 43,107, making it the #634 biggest city in 🇯🇵 Japan, located in Iwate. It is about 226× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

43,107

Rank in Japan

#634

Coordinates

39.28°N, 141.87°E

~25 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

443 km

275 miles, straight line

Other big cities in Iwate

City	Population	Rank in Japan
Morioka	290,700	#81
Ichinoseki	114,476	#237
Ōshū	112,937	#244
Hanamaki	94,691	#289
Kitakami	93,045	#297
Mizusawa	61,281	#450
Takizawa	55,579	#502
Miyako	51,150	#540

Cities near Kamaishi

Yamada15,195 people · ~22 km away
Ōfunato35,452 people · ~26 km away
Tōno26,110 people · ~29 km away
Rikuzen-Takata18,262 people · ~34 km away
Miyako51,150 people · ~42 km away
Kesennuma61,147 people · ~49 km away

FAQ

What is the population of Kamaishi?

Kamaishi has a population of 43,107 (city proper, latest official figure via GeoNames), making it the #634 biggest city in Japan.

What region is Kamaishi in?

Kamaishi is located in Iwate, Japan.

Is Kamaishi the capital of Japan?

No, the capital of Japan is Tokyo, about 443 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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