The fourth federal electoral district of Chiapas (Distrito electoral federal 04 de Chiapas) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 13 such districts in the state of Chiapas. It elects one deputy to the lower house of Congress for each three-year legislative period by means of the first-past-the-post system. Votes cast in the district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the third region.

District territory

Under the 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, the fourth district of Chiapas comprises 25 municipalities in the north-west of the state: The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the city of Pichucalco. With Indigenous and Afrodescendent inhabitants accounting for over 40% of its population, it is officially classified by the National Electoral Institute (INE) as an indigenous district.

Previous districting schemes

Under the 2017 scheme, the district covered 22 municipalities and had its head town at Pichucalco. In 2005–2017, the fourth district was located in the north-western portion of the state and covered the municipalities of Amatán, Berriozábal, Coapilla, Copainalá, Ixtacomitán, Ixtapangajoya, Juárez, Ocozocoautla de Espinosa, Ostuacán, Pichucalco, Reforma, San Fernando, Solosuchiapa, Sunuapa and Tecpatán. The head town was the city of Ocozocoautla de Espinosa. Between 1996 and 2005, the fourth district had a different configuration. It was still centred on Ocozocoautla de Espinosa but covered: The districting scheme in force from 1978 to 1996 was the result of the 1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300. Under that plan, Chiapas's seat allocation rose from six to nine. The fourth district had its head town at Pichucalco and it covered 17 municipalities.

Deputies returned to Congress