Semi Population 2026
Semi has a population of 23,636, making it the #47 biggest city in 🇧🇯 Benin, located in Ouémé. Roughly 0.2% of Benin's population lives here. It is about 29× smaller than Cotonou, the country's biggest city.
Population (city proper)
23,636
Rank in Benin
#47
Coordinates
6.37°N, 2.62°E
~8 m elevation · Africa/Porto-Novo
Distance to capital (Porto-Novo)
15 km
9 miles, straight line
Other big cities in Ouémé
| City | Population | Rank in Benin |
|---|---|---|
| Porto-Novo | 264,320 | #3 |
| Ekpé | 75,313 | #9 |
| Missérété | 41,657 | #23 |
| Adjarra | 24,132 | #44 |
| Avrankou | 20,326 | #53 |
Cities near Semi
FAQ
What is the population of Semi?
Semi has a population of 23,636 (city proper, latest official figure via GeoNames), making it the #47 biggest city in Benin.
What region is Semi in?
Semi is located in Ouémé, Benin.
Is Semi the capital of Benin?
No, the capital of Benin is Porto-Novo, about 15 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.