Boundary Atlas

ZIP code 85704: Casas Adobes, AZ

ZIP code 85704 is in Casas Adobes (75% of residents), Oro Valley (19%), Flowing Wells (3.5%) and Tucson (2.8%), in Pima County, Arizona. It is in Arizona's 6th congressional district. Its state senate districts are State Senate District 18 (78%), State Senate District 17 (18%) and State Senate District 20 (3.5%); its state house districts are State House District 18 (78%), State House District 17 (18%) and State House District 20 (3.5%).

34,430residents (2020 Census)
18.2 sq miland area
4cities and towns
1congressional district
14voting precincts

See it on the mapAll of Arizona

City and county

City or townShare of ZIP residents
Casas Adobes75%
Oro Valley19%
Flowing Wells3.5%
Tucson2.8%

CountyShare of ZIP residents
Pima County100%

Town or county subdivisionShare of ZIP residents
Tucson CCD100%

Congressional district

Congressional districtShare of ZIP residents
Arizona's 6th congressional district (AZ-06)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (AZ-06)Juan Ciscomani (R)202-225-2542100%
U.S. SenatorMark Kelly (D)202-224-2235 · contact formstatewide
U.S. SenatorRuben Gallego (D)202-224-4521statewide
State Senator (State Senate District 18)Priya Sundareshan (Democratic)78%
State Senator (State Senate District 17)Vince Leach (R)18%
State Senator (State Senate District 20)Sally Gonzales (Democratic)3.5%
State Representative (State House District 18)Chris Mathis (Democratic)78%
State Representative (State House District 18)Nancy Gutierrez (Democratic)78%
State Representative (State House District 17)Kevin Volk (Democratic)18%
State Representative (State House District 17)Rachel Keshel (R)18%
State Representative (State House District 20)Alma Hernández (Democratic)3.5%
State Representative (State House District 20)Betty Villegas (Democratic)3.5%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1878%
State Senate District 1718%
State Senate District 203.5%

State house districtShare of ZIP residents
State House District 1878%
State House District 1718%
State House District 203.5%

Voting precincts

14 voting precincts overlap ZIP 85704. Map them, with each precinct's share of the ZIP's residents.

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ZIP 85704 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.