View a list of Postal Codes in Costa RicaThe average area for zip codes in Costa Rica is 109.1 km² with the largest being 70404 in Provincia de Limón at 2,220.3 km² and the smallest being 10802 in San Francisco de Dos Ríos, Provincia de San José at 0.556 km². In Costa Rica the average population for a postal code is 10,226 with the most populated being zip code 10109 in Pavas, Provincia de San José at 71,579. The average population density for a postal code in Costa Rica is 1,274 / km² with the densest being zip code 11304 in Provincia de San José at 13,774 / km². The median age for postal codes in Costa Rica range from 18.0 years old for 30512 in Turrialba, Provincia de Cartago to 38.2 years old for 10101 in Mata de Plátano, Provincia de Cartago. The fastest growing postal code is 61101 in Jacó, Provincia de Puntarenas with population growth of 141.4% from 2000 to 2015, an average of 6.1% per year.
