30301 is the Postal Code/ZIP Code for the District of Tres Ríos in the Costa Rica Province of Cartago and the Canton of La Unión. The neighborhoods of El Invu, Florencia, Fátima, La Antigua, La Torre and Rivera del Río are located in Postal Code 30301.
| Postal Code | 30301 |
| Postal Code Name | Tres Ríos |
| Province | Cartago Province |
| Canton | La Unión Canton |
| Timezone | Central Standard Time (CST) |
| Adjacent Postal Codes | 30302 30303 30304 30305 30306 |