La Hacienda San Pedro belongs to the municipality San Diego de la Unión, Guanajuato state and its official ZIP Code is 37866
The Postal Codes National Catalog is prepared by the Mexican Postal Service and the postal code has 5 digits, depending on the country area. The first two digits identify the state or part of it. In the case of San Diego de la Unión the Zip Code range of the Guanajuato state is 36 a 38. To send letters or packages to San Diego de la Unión, Guanajuato you must always use the five-digit postal code.
The local area phone code is 418
Check out the Guanajuato ZIP Code list
Check out the list of cities with 37866 ZIP Code in México