Since 1996, the 6th district's various configurations have all been centred around Pachuca:
2017–2022 :Under the 2017 plan, the district covered the municipalities of Pachuca,
Tizayuca,
Tolcayuca and
Zapotlán de Juárez.
2005–2017 :Between 2005 and 2017, it comprised the municipalities of Pachuca and
Mineral de la Reforma.
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. :*Actopan, El Arenal, Atotonilco el Grande, Cardonal, Eloxochitlán, Huasca de Ocampo, Juárez Hidalgo, Metzquititlán, Metztitlán, Mineral del Chico, Mineral del Monte, Omitlan de Juárez, San Salvador, Santiago de Anaya, Tianguistengo, Tlahuiltepa, Xochicoatlán and Zacualtipán. ==Deputies returned to Congress==