Boundary Atlas

ZIP code 85120: Apache Junction, AZ

ZIP code 85120 is in Apache Junction (75% of residents), in Pinal County (84%) and Maricopa County (16%), Arizona. 25% of its residents live outside city limits. It is in Arizona's 5th congressional district. Its state senate districts are State Senate District 10 (56%) and State Senate District 7 (44%); its state house districts are State House District 10 (56%) and State House District 7 (44%).

30,605residents (2020 Census)
23.1 sq miland area
1cities and towns
1congressional district
14voting precincts

See it on the mapAll of Arizona

City and county

City or townShare of ZIP residents
Apache Junction75%

CountyShare of ZIP residents
Pinal County84%
Maricopa County16%

Town or county subdivisionShare of ZIP residents
North Pinal CCD84%
Phoenix CCD16%

Congressional district

Congressional districtShare of ZIP residents
Arizona's 5th congressional district (AZ-05)100%

Elected officials

OfficeMemberContactShare of residents
MayorChip Wilson480-474-506675%
U.S. Representative (AZ-05)Andy Biggs (R)202-225-2635100%
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)56%
State Senator (State Senate District 7)Wendy Rogers (R)44%
State Representative (State House District 10)Justin Olson (R)56%
State Representative (State House District 10)Ralph Heap (R)56%
State Representative (State House District 7)Sylvia Allen (R)44%
State Representative (State House District 7)Walt Blackman (R)44%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); 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 1056%
State Senate District 744%

State house districtShare of ZIP residents
State House District 1056%
State House District 744%

Voting precincts

14 voting precincts overlap ZIP 85120. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:85120")

ZIP 85120 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.