Boundary Atlas

ZIP code 62033: Gillespie, IL

ZIP code 62033 is in Gillespie (69% of residents), East Gillespie (5.9%), Mount Clare (5.5%) and Dorchester (2.9%), in Macoupin County, Illinois. 17% of its residents live outside city limits. It is in Illinois's 13th congressional district. Its state senate district is State Senate District 54; its state house district is State House District 108.

4,584residents (2020 Census)
46.8 sq miland area
5cities and towns
1congressional district
8voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Gillespie69%
East Gillespie5.9%
Mount Clare5.5%
Dorchester2.9%
Wilsonville0.5%

CountyShare of ZIP residents
Macoupin County100%

Town or county subdivisionShare of ZIP residents
Gillespie township78%
Cahokia township18%
Dorchester township3.0%
Brushy Mound township1.0%
Honey Point township0.4%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 13th congressional district (IL-13)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 54100%

State house districtShare of ZIP residents
State House District 108100%

Voting precincts

8 voting precincts overlap ZIP 62033. 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:62033")

ZIP 62033 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.