Cartago Province · Costa Rica
San Diego population
16,991people · latest figure
San Diego has a population of 16,991, making it the 32nd largest place we list in Costa Rica. It is in Cartago Province.
San Diego holds 0.33% of Costa Rica's 5,174,789 people. San José, the largest place we list there, is 20 times its size. Twenty years earlier the World Gazetteer recorded 16,991, almost unchanged.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Cañas | Guanacaste Province | 20,306 |
| Guápiles | Limón Province | 19,092 |
| Siquirres | Limón Province | 18,231 |
| Esparza | Puntarenas Province | 15,575 |
| San Juan de Dios | San José | 15,469 |
| Nicoya | Guanacaste Province | 15,313 |
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.