Boundary Atlas

ZIP code 85205: Mesa, AZ

ZIP code 85205 is in Mesa (83% of residents), in Maricopa County, Arizona. 17% of its residents live outside city limits. It is in Arizona's 4th congressional district. Its state senate district is State Senate District 10; its state house district is State House District 10.

44,137residents (2020 Census)
10.1 sq miland area
1cities and towns
1congressional district
11voting precincts

See it on the mapAll of Arizona

City and county

City or townShare of ZIP residents
Mesa83%

CountyShare of ZIP residents
Maricopa County100%

Town or county subdivisionShare of ZIP residents
Phoenix CCD100%

Congressional district

Congressional districtShare of ZIP residents
Arizona's 4th congressional district (AZ-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (AZ-04)Greg Stanton (D)202-225-9888100%
U.S. SenatorMark Kelly (D)202-224-2235 · contact formstatewide
U.S. SenatorRuben Gallego (D)202-224-4521statewide
State Senator (State Senate District 10)Dave Farnsworth (R)100%
State Representative (State House District 10)Justin Olson (R)100%
State Representative (State House District 10)Ralph Heap (R)100%

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 10100%

State house districtShare of ZIP residents
State House District 10100%

Voting precincts

11 voting precincts overlap ZIP 85205. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:85205")

ZIP 85205 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.