Boundary Atlas

ZIP code 62048: Hartford, IL

ZIP code 62048 is in Hartford (96% of residents), in Madison County, Illinois. It is in Illinois's 13th congressional district. Its state senate district is State Senate District 56; its state house district is State House District 111.

1,240residents (2020 Census)
17.2 sq miland area
2cities and towns
1congressional district
6voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Hartford96%
South Roxana0.3%

CountyShare of ZIP residents
Madison County100%

Town or county subdivisionShare of ZIP residents
Chouteau township67%
Wood River township33%
Venice townshipland only

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 56100%

State house districtShare of ZIP residents
State House District 111100%

Voting precincts

6 voting precincts overlap ZIP 62048. 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:62048")

ZIP 62048 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.