10303 is the Postal Code/ZIP Code for the District of San Juan de Dios in the Costa Rica Province of San José and the Canton of Desamparados. The neighborhoods of Calabacitas, Cruz Roja, El Río, Itaipú, Itaipú 2, Itaipú 3, Los Robles, Mota, Máquina, Novedades and Pedrito Monge are located in Postal Code 10303.
| Postal Code | 10303 |
| Postal Code Name | San Juan de Dios |
| Province | San José Province |
| Canton | Desamparados Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 10304 10311 10601 11003 11004 |