The current postal code system in Dominican Republic uses a five digit format.
| Province | Postal Code Prefix |
|---|---|
| Azua | 71xxx |
| Baoruco | 82xxx |
| Barahona | 81xxx |
| Dajabón | 63xxx |
| Distrito Nacional | 10xxx,11xxx |
| Duarte | 31xxx |
| El Seibo | 24xxx |
| Elías Piña | 73xxx |
| Espaillat | 53xxx,56xxx |
| Hato Mayor | 25xxx |
| Hermanas Mirabal | 34xxx |
| Independencia | 83xxx |
| La Altagracia | 23xxx |
| La Romana | 22xxx |
| La Vega | 41xxx |
| María Trinidad Sánchez | 33xxx |
| Monseñor Nouel | 42xxx |
| Monte Cristi | 62xxx |
| Monte Plata | 92xxx |
| Pedernales | 84xxx |
| Peravia | 94xxx |
| Puerto Plata | 57xxx |
| Samaná | 32xxx |
| San Cristóbal | 91xxx |
| San José de Ocoa | 93xxx |
| San Juan | 72xxx |
| San Pedro de Macorís | 21xxx |
| Sánchez Ramírez | 43xxx |
| Santiago | 51xxx |
| Santiago Rodríguez | 64xxx |
| Santo Domingo | 10xxx,11xxx |
| Valverde | 61xxx |