Boundary Atlas

ZIP code 60004: Arlington Heights, IL

ZIP code 60004 is in Arlington Heights (93% of residents), in Cook County, Illinois. 6.8% of its residents live outside city limits. It is in Illinois's 5th congressional district (67%), Illinois's 9th congressional district (26%) and Illinois's 8th congressional district (7.3%). Its state senate districts are State Senate District 27 (100%) and State Senate District 29 (0.3%); its state house districts are State House District 54 (100%) and State House District 57 (0.3%).

52,546residents (2020 Census)
11.1 sq miland area
3cities and towns
3congressional districts
35voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Arlington Heights93%
Prospect Heights0.4%
Wheeling0.2%

CountyShare of ZIP residents
Cook County100%

Town or county subdivisionShare of ZIP residents
Wheeling township93%
Palatine township7.3%

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 5th congressional district (IL-05)67%
Illinois's 9th congressional district (IL-09)26%
Illinois's 8th congressional district (IL-08)7.3%

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 districtShare of ZIP residents
State Senate District 27100%
State Senate District 290.3%

State house districtShare of ZIP residents
State House District 54100%
State House District 570.3%

Voting precincts

35 voting precincts overlap ZIP 60004. 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:60004")

ZIP 60004 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.