Boundary Atlas

ZIP code 85638: Tombstone, AZ

ZIP code 85638 is in Tombstone (69% of residents), in Cochise County, Arizona. 31% of its residents live outside city limits. It is in Arizona's 6th congressional district (98%) and Arizona's 7th congressional district (1.6%). Its state senate districts are State Senate District 19 (98%) and State Senate District 21 (1.6%); its state house districts are State House District 19 (98%) and State House District 21 (1.6%).

1,886residents (2020 Census)
270.0 sq miland area
1cities and towns
2congressional districts
5voting precincts

See it on the mapAll of Arizona

City and county

City or townShare of ZIP residents
Tombstone69%

CountyShare of ZIP residents
Cochise County100%

Town or county subdivisionShare of ZIP residents
Sierra Vista CCD94%
Bisbee CCD5.7%
Elfrida CCD0.5%

Congressional districts

Congressional districtShare of ZIP residents
Arizona's 6th congressional district (AZ-06)98%
Arizona's 7th congressional district (AZ-07)1.6%

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 districtShare of ZIP residents
State Senate District 1998%
State Senate District 211.6%

State house districtShare of ZIP residents
State House District 1998%
State House District 211.6%

Voting precincts

5 voting precincts overlap ZIP 85638. 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:85638")

ZIP 85638 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.