# List of Mexican states by date of statehood

This is a list of Mexican states by date of statehood, that is, the date when each state was accepted by Congress of the Union as a free and sovereign state of the United Mexican States.

## Background

The effective independence of Mexico reached on September 27, 1821, does not meant the independence of the states, because Mexico was the only Latin American country which became independent from Spain as a monarchy. After the fall of the Mexican Empire, the Federal Republic was established on July 12, 1823.
Although 18 of the 19 founder states can be considered official members of the federation since the enactment of the Constitutive Act of the Mexican Federation on January 31, 1824; eleven of them were ratified as states before the enactment and some of the others were included as three states (the internal States of North, Western and Eastern). Tamaulipas, Tabasco and Chiapas were ratified after the enactment of the act.
All the later admission dates were set by law or decree of congress, except for Chiapas, whose admission was determined by its own people in a referendum.

## List

This list does not account the secession of several states during the establishment of the Centralist Republic and the territorial changes made during the civil and foreign wars.
| # | State | Admission | Preceding Entity |
| 1 | México | December 20, 1823 | Intendancy of México, then Province of México |
| 2 | Guanajuato | December 20, 1823 | Intendancy of Guanajuato, then Province of Guanajuato |
| 3 | Oaxaca | December 21, 1823 | Intendancy of Oaxaca, then Province of Oaxaca |
| 4 | Puebla | December 21, 1823 | Intendancy of Puebla, then Province of Puebla de los Angeles |
| 5 | Michoacán | December 22, 1823 | Intendancy of Valladolid, then Province of Valladolid |
| 6 | San Luis Potosí | December 22, 1823 | Intendancy of San Luis Potosí, then San Luis Potosí |
| 7 | Veracruz | December 22, 1823 | Intendancy of Veracruz, then Province of Veracruz |
| 8 | Yucatán | December 23, 1823 | Captaincy General of Yucatán, Intendancy of Yucatán, Province of Mérida de Yucatán and then Republic of Yucatán |
| 9 | Jalisco | December 23, 1823 | Nueva Galicia, Intendancy of Guadalajara, Province of Guadalajara |
| 10 | Zacatecas | December 23, 1823 | Nueva Galicia, Intendancy of los Zacatecas, Province of Zacatecas |
| 11 | Querétaro | December 23, 1823 | Intendancy of México, then Province of Querétaro |
| 12 | Sonora | January 10, 1824 | Nueva Navarra, Province of Sonora |
| 13 | Tabasco | February 7, 1824 | Split off from Veracruz and Yucatán |
| 14 | Tamaulipas | February 7, 1824 | Nuevo Santander, then Province of Santander |
| 15 | Nuevo León | May 7, 1824 | New Kingdom of León, then Province of New Kingdom of León |
| 16 | Coahuila | May 7, 1824 | Nueva Extremadura, then Province of Coahuila |
| 17 | Durango | May 22, 1824 | Nueva Vizcaya, then Province of Nueva Vizcaya |
| 18 | Chihuahua | July 6, 1824 | Nueva Vizcaya, then Province of Nueva Vizcaya |
| 19 | Chiapas | September 14, 1824 | Captaincy General of Guatemala, then Province of Guatemala |
| 20 | Sinaloa | October 14, 1830 | Split off from Estado de Occidente |
| 21 | Guerrero | October 27, 1849 | Formed from parts of México, Puebla and Michoacán |
| 22 | Tlaxcala | December 9, 1856 | Territory of Tlaxcala |
| 23 | Colima | December 9, 1856 | Territory of Colima |
| 24 | Aguascalientes | February 5, 1857 | Territory of Aguascalientes |
| 25 | Campeche | April 29, 1863 | Territory of Campeche, split off from Yucatán |
| 26 | Hidalgo | January 16, 1869 | Split off from México |
| 27 | Morelos | April 17, 1869 | Split off from México |
| 28 | Nayarit | January 26, 1917 | Territory of Tepic |
| 29 | Baja California | January 16, 1952 | North Territory of Baja California |
| 30 | Quintana Roo | October 8, 1974 | Territory of Quintana Roo, split off from Yucatán |
| 31 | Baja California Sur | October 8, 1974 | South Territory of Baja California |