Antsirabe's 2026 population is now estimated at 465,434. In 1950, the population of Antsirabe was 9,767. Antsirabe has grown by 19,374 in the last year, which represents a 4.34% annual change. These population estimates and projections come from the latest revision of the UN World Urbanization Prospects . These estimates represent the Urban agglomeration of Antsirabe, which typically includes Antsirabe's population in addition to adjacent suburban areas.
| City | 2026 Pop. ↓ | Growth |
|---|---|---|
| Antananarivo | 4,413,150 | 4.35% |
| Toamasina | 578,889 | 4.48% |