Seto Population 2026

Seto has a population of 127,792, making it the #210 biggest city in 🇯🇵 Japan, located in Aichi. Roughly 0.1% of Japan's population lives here. It is about 76× smaller than Tokyo, the country's biggest city.

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

Population (city proper)

127,792

Rank in Japan

#210

Coordinates

35.23°N, 137.10°E

~111 m elevation · Asia/Tokyo

Distance to capital (Tokyo)

240 km

149 miles, straight line

Other big cities in Aichi

City	Population	Rank in Japan
Nagoya	2,332,176	#4
Toyota	426,162	#43
Okazaki	384,654	#54
Ichinomiya	380,073	#55
Toyohashi	377,453	#56
Kasugai	308,681	#74
Anjō	188,693	#133
Toyokawa	184,661	#135

Cities near Seto

Owariasahi83,144 people · ~7 km away
Nagakute60,162 people · ~8 km away
Tajimi107,818 people · ~10 km away
Nisshin91,795 people · ~12 km away
Kasugai308,681 people · ~12 km away
Toki58,567 people · ~15 km away

FAQ

What is the population of Seto?

Seto has a population of 127,792 (city proper, latest official figure via GeoNames), making it the #210 biggest city in Japan.

What region is Seto in?

Seto is located in Aichi, Japan.

Is Seto the capital of Japan?

No, the capital of Japan is Tokyo, about 240 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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