The postal code of San Marcos which is listed in our database is 10501. Our records often include geographical coordinates of San Marcos and it's corresponding postal code. In the result box below, you can find the postal code of San Marcos and it's location on the map if we have the location information available. Every postal code is also located in a region or a district, in case we know the district or region of the city it will too be listed in the results. All kinds of additional information we have on San Marcos may also be present such as geographical data, historical records or news about San Marcos and 10501 in general.