San Francisco Xonacatlán is a town in the State of Mexico. Colonia San Francisco Xonacatlán de Vicencio is located in the municipality of Xonacatlán. Its area code is 719; its postal code is 52060.Its land title was established in the Codex of San Francisco Xonacatlán, which describes the pre-Columbian and colonial history of the town, and details of its land boundaries. Viceroy Antonio de Mendoza granted lands to the town in 1528.