State flags of Mexico

Most Mexican states do not have an official flag. For these states, a de facto flag is used for civil and state purposes. State flags of Mexico have a 4:7 ratio and typically consist of a white background charged with the state's coat of arms.

At least nine states have official flags: Baja California Sur, Chihuahua, Durango, Guanajuato, Guerrero, Jalisco, Querétaro, Quintana Roo, Tlaxcala and Yucatán. Except for Guanajuato, Jalisco, Tlaxcala and Yucatán, each official flag is simply a white background charged with the state's coat of arms. Coahuila, Colima, Oaxaca, Tabasco and Tamaulipas adopted its coat of arms into a flag.

Two states have provisions in their constitutions explicitly declaring that there shall be no official state flag. These states are Baja California and Campeche.