Population 2026

has a population of 26,627, making it the #39 biggest city in 🇧🇯 Benin, located in Mono. Roughly 0.2% of Benin's population lives here. It is about 26× smaller than Cotonou, the country's biggest city.

Porto-Novo
Location of (capital Porto-Novo shown for reference). Boundaries: Natural Earth.
Population (city proper)
26,627
Rank in Benin
#39
Coordinates
6.51°N, 1.83°E
~32 m elevation · Africa/Porto-Novo
Distance to capital (Porto-Novo)
86 km
53 miles, straight line

Other big cities in Mono

CityPopulationRank in Benin
Lokossa47,246#17
Athiémé15,195#66

Cities near

  • Comé42,586 people · ~13 km away
  • Lokossa47,246 people · ~19 km away
  • Athiémé15,195 people · ~19 km away
  • Kouandé27,197 people · ~29 km away
  • Dogbo41,341 people · ~32 km away
  • Ouidah47,616 people · ~33 km away

FAQ

What is the population of Sé?
Sé has a population of 26,627 (city proper, latest official figure via GeoNames), making it the #39 biggest city in Benin.
What region is Sé in?
Sé is located in Mono, Benin.
Is Sé the capital of Benin?
No, the capital of Benin is Porto-Novo, about 86 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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