Votes cast in the district also counted towards the calculation of proportional representation ("plurinominal") deputies elected from the country's electoral regions.

[1][2] The 28th, 29th and 30th districts were abolished in the Federal Electoral Institute's 2005 redistricting process because the capital's population no longer warranted that number of seats in Congress.

[3] In its final form, when the capital comprised 30 districts, the 30th was located in the south of the city, covering the southern and more rural parts of the borough of Tlalpan.

[4] 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.

[5] The 30th district covered a portion of the borough of Gustavo A. Madero in the north of the city.