First federal electoral district of Chiapas

The first federal electoral district of Chiapas (Distrito electoral federal 01 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 this district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the third region.

District territory
Under the 2022 districting plan, which will be used for the 2024, 2027 and 2030 elections, the first district covers eight municipalities in north-eastern Chiapas: Catazajá, La Libertad, Palenque, Sabanilla, Salto de Agua, Tila, Tumbalá and Yajalón. The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the city of Palenque.

Previous districting schemes
From 2017 to 2022 the district had the same configuration as under the 2022 plan.
 * 2017–2022

The 2005 district covered the same municipalities as under the 2022 and 2017 plans but also included Chilón. The head town was the city of Palenque.
 * 2005–2017

Between 1996 and 2005, the district had exactly the same composition as under the 2005 plan.
 * 1996–2005