Arizona is divided into nine congressional districts, each represented by a member of the United States House of Representatives. Since the 2008 elections, Democrats and Republicans have alternated holding a majority of seats in the delegation in six of the last eight elections.
List of members of the United States House delegation from Arizona, district boundaries, and the district political ratings according to the CPVI. The delegation has a total of nine members, with six Republicans and three Democrats.
| District | Member (Residence)[1] |
Party | Incumbent since | CPVI (2022)[2] |
District map |
|---|---|---|---|---|---|
| 1st |  David Schweikert (Fountain Hills) |
Republican | January 3, 2011 | R+2 | 
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| 2nd |  Eli Crane (Oro Valley) |
Republican | January 3, 2023 | R+6 | 
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| 3rd |  Ruben Gallego (Phoenix) |
Democratic | January 3, 2015 | D+24 | 
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| 4th |  Greg Stanton (Phoenix) |
Democratic | January 3, 2019 | D+2 | 
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| 5th |  Andy Biggs (Gilbert) |
Republican | January 3, 2017 | R+11 | 
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| 6th |  Juan Ciscomani (Tucson) |
Republican | January 3, 2023 | R+3 | 
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| 7th |  Raúl Grijalva (Tucson) |
Democratic | January 3, 2003 | D+15 | 
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| 8th |  Debbie Lesko (Peoria) |
Republican | May 7, 2018 | R+10 | 
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| 9th |  Paul Gosar (Bullhead City) |
Republican | January 3, 2011 | R+16 | 
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From 1863 to 1912, Arizona Territory sent one non-voting delegate to the House of Representatives. After its statehood in 1912, Arizona was granted one representative in the House. As the state's population has grown, Arizona's delegation has increased in size to its total of nine representatives.
| Congress | Representatives | Notes |
|---|---|---|
| 38th–62nd (1863–1912) |
1 | Non-voting delegate |
| 62nd–77th (1912–1943) |
1 | |
| 78th–80th (1943–1949) |
2 | Elected on an at-large basis |
| 81st–87th (1949–1963) |
2 | |
| 88th–92nd (1963–1973) |
3 | |
| 93rd–97th (1973–1983) |
4 | |
| 98th–102nd (1983–1993) |
5 | |
| 103rd–107th (1993–2003) |
6 | |
| 108th–112th (2003–2013) |
8 | |
| 113th– (2013–) |
9 |
Table of United States congressional district boundary maps in the State of Arizona, presented chronologically.[3] All redistricting events that took place in Arizona between 1973 and 2013 are shown.
| Year | Statewide map | Phoenix highlight |
|---|---|---|
| 1973–1982 | 
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| 1983–1992 | 
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| 1993–2002 | 
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| 2003–2013 | 
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| 2013-2023 | 
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Due to redistricting, the congressional district numbers in Arizona have changed for the 2022 election cycle. Through this process, the district numbers have changed the following ways:
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| Senators |
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| Representatives (ordered by district) |
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