1st federal electoral district of Hidalgo

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,^[7] the 1st district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Huejutla de Reyes in the extreme north-east of the state.^[1]

The district covers 321 electoral precincts (secciones electorales) across 18 of the state's municipalities:^[8]

• Atlapexco, Calnali, Eloxochitlán, Huautla, Huazalingo, Huejutla, Jaltocan, Juárez Hidalgo, Lolotla, Molango de Escamilla, San Felipe Orizatlán, Tepehuacán de Guerrero, Tianguistengo, Tlanchinol, Xochiatipan, Xochicoatlán, Yahualica and Zacualtipán de Ángeles.

The district reported a population of 443,425 in the 2020 Census and, with Indigenous and Afrodescendent inhabitants accounting for over 81% of that total, it is classified by the INE as an indigenous district.^[8][b]

2017–2022

Under the 2017 plan, the district covered 15 municipalities in the same part of the state:^[12][13]

• Atlapexco, Calnali, Huautla, Huazalingo, Huejutla, Jaltocan, Lolotla, Molango de Escamilla, San Felipe Orizatlán, Tepehuacán de Guerrero, Tianguistengo, Tlanchinol, Xochiatipan, Xochicoatlán and Yahualica.

Thus, the municipalities of the 2023–2030 district, minus Eloxochitlán, Juárez Hidalgo and Zacualtipán.

2005–2017

Between 2005 and 2017, it comprised 13 municipalities in the same part of the state:^[14][15]

• Atlapexco, Calnali, Huautla, Huazalingo, Huejutla, Jaltocan, Lolotla, San Felipe Orizatlán, Tepehuacán de Guerrero, Tianguistengo, Tlanchinol, Xochiatipan and Yahualica.

That is, the 2017 district minus Molango and Xochicoatlán.

1996–2005

The 1996 redistricting process created Hidalgo's 7th district. The 1st district covered 14 municipalities in the same part of the state as in the later plans:^[16][15]

• Atlapexco, Calnali, Huautla, Huazalingo, Huejutla, Jaltocan, Lolotla, Molango de Escamilla, San Felipe Orizatlán, Tepehuacán de Guerrero, Tianguistengo, Tlanchinol, Xochiatipan and Yahualica.

The only change compared to the 2005 configuration was the inclusion of Molango.

1978–1996

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, Hidalgo's seat allocation rose from five to six.^[9] The 1st district's head town was at the state capital, Pachuca, and it comprised 12 nearby municipalities:^[17]

• Emiliano Zapata, Epazoyucan, Mineral de la Reforma, Pachuca, San Agustín Tlaxiaca, Tepeapulco, Tezontepec, Tizayuca, Tlanalapa, Tolcayuca, Zapotlán de Juárez and Zempoala.