Sasebo Population 2026
Sasebo has a population of 243,223, making it the #99 biggest city in 🇯🇵 Japan, located in Nagasaki. Roughly 0.2% of Japan's population lives here. It is about 40× smaller than Tokyo, the country's biggest city.
Population (city proper)
243,223
Rank in Japan
#99
Coordinates
33.17°N, 129.73°E
~8 m elevation · Asia/Tokyo
Distance to capital (Tokyo)
956 km
594 miles, straight line
Other big cities in Nagasaki
Cities near Sasebo
- Arita19,010 people · ~16 km away
- Imarichō-kō57,940 people · ~18 km away
- Matsuura23,566 people · ~19 km away
- Saikai26,275 people · ~21 km away
- Ureshinomachi-shimojuku25,848 people · ~27 km away
- Hirado31,192 people · ~27 km away
FAQ
What is the population of Sasebo?
Sasebo has a population of 243,223 (city proper, latest official figure via GeoNames), making it the #99 biggest city in Japan.
What region is Sasebo in?
Sasebo is located in Nagasaki, Japan.
Is Sasebo the capital of Japan?
No, the capital of Japan is Tokyo, about 956 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.