Alajuela
- Country:
- Costa Rica
- Continent:
- North America
Alajuela's 2025 population is now estimated at 435,274. In 1950, the population of Alajuela was 13,944. Alajuela has grown by 10,636 in the last year, which represents a 2.5% 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 Alajuela, which typically includes Alajuela's population in addition to adjacent suburban areas.