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.