ZIP code 85331: Phoenix, AZ
ZIP code 85331 is in Phoenix (64% of residents), Cave Creek (16%) and New River (1.1%), in Maricopa County, Arizona. 19% of its residents live outside city limits. It is in Arizona's 1st congressional district (99%) and Arizona's 8th congressional district (1.3%). Its state senate district is State Senate District 3; its state house district is State House District 3.
See it on the mapAll of Arizona
City and county
| City or town | Share of ZIP residents |
|---|---|
| Phoenix | 64% |
| Cave Creek | 16% |
| New River | 1.1% |
| Carefree | 0.6% |
| Scottsdale | 0.1% |
| County | Share of ZIP residents |
|---|---|
| Maricopa County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Deer Valley CCD | 99% |
| Tonto National Forest CCD | 0.8% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Arizona's 1st congressional district (AZ-01) | 99% |
| Arizona's 8th congressional district (AZ-08) | 1.3% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 3 | 100% |
| State Senate District 2 | land only |
| State house district | Share of ZIP residents |
|---|---|
| State House District 3 | 100% |
| State House District 2 | land only |
Voting precincts
14 voting precincts overlap ZIP 85331. 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:85331")
ZIP 85331 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.