La Colonia Santo Domingo belongs to the municipality León, Guanajuato state and its official ZIP Code is 37557
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 León the Zip Code range of the Guanajuato state is 36 a 38. To send letters or packages to León, Guanajuato you must always use the five-digit postal code.
The local area phone code is 477
Check out the Guanajuato ZIP Code list
Check out the list of cities with 37557 ZIP Code in México