4th federal electoral district of Sonora

Under the 2023 districting plan adopted by the National Electoral Institute (INE), which is to be used for the 2024, 2027 and 2030 federal elections, Sonora's 4th district comprises 278 electoral precincts () across 41 municipalities in the central and eastern parts of the state: • Aconchi, Arivechi, Bacadéhuachi, Bacanora, Bacerac, Bácum, Banámichi, Baviácora, Bavispe, Benjamín Hill, Carbó, Cumpas, Divisaderos, Empalme, Granados, Guaymas, Huachinera, Huasabas, Huépac, La Colorada, Mazatán, Moctezuma, Nacori Chico, Nacozari de García, Onavas, Opodepe, Rayón, Sahuaripa, San Felipe de Jesús, San Ignacio Río Muerto, San Javier, San Miguel de Horcasitas, San Pedro de la Cueva, Santa Ana, Soyopa, Suaqui Grande, Tepache, Ures, Villa Hidalgo, Villa Pesqueira and Yécora. The head town (), where results from individual polling stations are gathered together and tallied, is the port city of Guaymas. The district reported a population of 361,610 in the 2020 Census. ==Previous districting schemes==

2017–2022 :Between 2017 and 2022, the district had the same configuration as at present. 2005–2017 :Under the 2005 plan, the district's head town was at Guaymas and it covered 39 municipalities. 1996–2005 :Under the 1996 districting plan, the head town was at Guaymas and the district covered 16 municipalities. The 4th district had its head town at Navojoa and it covered the municipalities of Etchojoa, Huatabampo and Navojoa. ==Deputies returned to Congress==