The federal electoral districts (Spanish : distritos electorales federales ) of Mexico are the 300 constituencies or electoral districts into which Mexico is divided for the purpose of federal elections . Each district returns one federal deputy (diputado ), who sits in the Chamber of Deputies (Cámara de Diputados ), the lower house of the Federal Congress . An additional 200 deputies are elected by proportional representation from the five electoral regions .
Electoral districts are identified by Roman numerals and by federal entity (state or the Federal District ). The number of electoral districts was set at 300 in 1979, when the number of seats in the Chamber of Deputies was increased from 196. The demarcation of the districts depends on the results of the previous electoral census, and adjustments to the 1979 districts were made in 1996 and 2005.
Irrespective of population, no state may be represented by fewer than two electoral districts. This is the case with Baja California Sur (population: 512,000), Campeche (population: 755,000) and Colima (population: 568,000), which, as a result, return more senators than deputies to Congress. The states with the most electoral districts are the state of México (population: 14 million), with 40, and Veracruz (population: 7.1 million), with 21. The Federal District , with a population of 8.8 million, has 27.
On 11 February 2005, the Federal Electoral Institute (now the National Electoral Institute ) established the districts to be used in the 2006 general election and the 2009 mid-term election , in accordance with the following criteria:
Each district to belong to only one federal entity.
Balanced distribution of population between districts.
Presence of indigenous populations .
Geographical continuity.
Travel times. Under this scheme, the current electoral districts are the following:
Electoral districts [ ] The numbers indicate the number of districts in each federal entity for federal elections between 2006 and 2015.
Federal electoral districts of Aguascalientes in 2018
1st district : 1857-present2nd district : 1857-present3rd district : 1863-1902, 1997-present: 1867-1902 (defunct)
Federal electoral districts of Baja California in 2018
At-large : 1857-19551st district : 1955-present2nd district : 1955-present3rd district : 1961-present: 1964-1967, 1979-present
5th district : 1979-present: 1979-present
: 2006-present
: 2006-present
Federal electoral districts of Baja California Sur in 2018
1st district : 1976-present2nd district : 1976-present
District Head town
I Federal Electoral District of Campeche Campeche
II Federal Electoral District of Campeche Ciudad del Carmen
Chiapas [ ] Chihuahua [ ]
District Head town
I Federal Electoral District of Chihuahua Ciudad Juárez
II Federal Electoral District of Chihuahua Ciudad Juárez
III Federal Electoral District of Chihuahua Ciudad Juárez
IV Federal Electoral District of Chihuahua Ciudad Juárez
V Federal Electoral District of Chihuahua Delicias
VI Federal Electoral District of Chihuahua Chihuahua
VII Federal Electoral District of Chihuahua Cuauhtémoc
VIII Federal Electoral District of Chihuahua Chihuahua
IX Federal Electoral District of Chihuahua Hidalgo del Parral
X Federal Electoral District of Chihuahua Defunct as of 1996
District Head town
I Federal Electoral District of Coahuila Piedras Negras
II Federal Electoral District of Coahuila San Pedro de las Colonias
III Federal Electoral District of Coahuila Monclova
IV Federal Electoral District of Coahuila Saltillo
V Federal Electoral District of Coahuila Torreón
VI Federal Electoral District of Coahuila Torreón
VII Federal Electoral District of Coahuila Saltillo
District Head town
I Federal Electoral District of Colima Colima
II Federal Electoral District of Colima Manzanillo
Distrito Federal [ ]
District Head town
I Federal Electoral District of the Federal District Gustavo A. Madero
II Federal Electoral District of the Federal District Gustavo A. Madero
III Federal Electoral District of the Federal District Azcapotzalco
IV Federal Electoral District of the Federal District Iztapalapa
V Federal Electoral District of the Federal District Tlalpan
VI Federal Electoral District of the Federal District Gustavo A. Madero
VII Federal Electoral District of the Federal District Gustavo A. Madero
VIII Federal Electoral District of the Federal District Cuauhtémoc
IX Federal Electoral District of the Federal District Venustiano Carranza
X Federal Electoral District of the Federal District Miguel Hidalgo
XI Federal Electoral District of the Federal District Venustiano Carranza
XII Federal Electoral District of the Federal District Cuauhtémoc
XIII Federal Electoral District of the Federal District Iztacalco
XIV Federal Electoral District of the Federal District Tlalpan
XV Federal Electoral District of the Federal District Benito Juárez
XVI Federal Electoral District of the Federal District Álvaro Obregón
XVII Federal Electoral District of the Federal District Cuajimalpa de Morelos
XVIII Federal Electoral District of the Federal District Iztapalapa
Iztapalapa
Iztapalapa
Milpa Alta
Iztapalapa
Coyoacán
Coyoacán
Xochimilco
La Magdalena Contreras
Tláhuac
Defunct as of 2005
Defunct as of 2005
Defunct as of 2005
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
Defunct as of 1996
District Head town
Durango
Gómez Palacio
Guadalupe Victoria
Durango
Defunct as of 2005
Defunct as of 1996
Guanajuato [ ] Jalisco [ ] Morelos [ ]
District Head town
I Federal Electoral District of Nayarit Santiago Ixcuintla
II Federal Electoral District of Nayarit Tepic
III Federal Electoral District of Nayarit Compostela
Oaxaca [ ] Puebla [ ]
District Head town
I Federal Electoral District of Quintana Roo Playa del Carmen
II Federal Electoral District of Quintana Roo Chetumal
III Federal Electoral District of Quintana Roo Cancún
Sonora [ ] See also [ ] External links [ ] 
