San Francisco de los Romo is a municipality and city in the Mexican state of Aguascalientes.

The city of San Francisco de los Romo serves as the municipal seat for the surrounding municipality of San Francisco de los Romo.

The city, which is the state's sixth-largest community, is located at the northwest corner of the municipality.

[5] As of 2010, the city of San Francisco de los Romo had a population of 16,124.

[5] Other than the city of San Francisco de los Romo, the municipality had 117 localities, the largest of which (with 2010 populations in parentheses) were: Ex-viñedos Guadalupe (3,499), classified as urban, and Colonia Macario J. Gómez (2,122), Puertecito de la Virgen (1,976), Paseos de la Providencia (1,867), La Concepción (1,483), and La Escondida (El Salero) (1,318), classified as rural.