Below are the urban areas with more than 100,000 inhabitants in Réunion ranked by population.
Urban Area (or urban agglomeration) population refers to the population contained within the contours of a contiguous territory inhabited at urban density levels, typically comprising a city and its surrounding suburban fringe.
| Rank | Urban Area | Population Estimate (2025) | 1 Year Change (over 2024) | Land Area (Km²) | Density (P/Km²) | Global Rank | Projections (2030) | Projections (2050) |
|---|---|---|---|---|---|---|---|---|
| 1 | Saint-Denis | 142,023 | 0.36% | 41 | 3,464 | 4,297 | 164,098 | 174,384 |
| 2 | Le Port | 92,930 | 0.85% | 48 | 1,936 | 6,664 | 94,733 | 100,157 |
| 3 | Le Tampon | 57,355 | 0.33% | 22 | 2,607 | 10,744 | 58,136 | 61,242 |
| 4 | Saint-André | 54,459 | 0.36% | 22 | 2,475 | 11,302 | 55,310 | 57,045 |
Source: United Nations, Department of Economic and Social Affairs, Population Division (2025). World Urbanization Prospects: The 2025 Revision, Online Edition.