The 5th federal electoral district of Sonora () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of seven such districts in the state of Sonora.
It elects one deputy to the lower house of Congress for each three-year legislative session by means of the first past-the-post system. Votes cast in the district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the first region.
Suspended in 1930, the 5th district was re-established in 1978 and was contested again in the 1979 legislative election.
The current member for the district, elected in the 2024 general election, is Jacobo Mendoza Ruiz of the National Regeneration Movement (Morena).
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 5th district covers 217 electoral precincts () in the south-eastern half of the municipality of Hermosillo.
The head town (), where results from individual polling stations are gathered together and tallied, is the state capital, the city of Hermosillo. The district reported a population of 468,661 in the 2020 Census.
2017âÂÂ2022
1996âÂÂ2017
1978âÂÂ1996