Boundary Atlas

ZIP code 62425: Dundas, IL

ZIP code 62425 is in Dundas (25% of residents), in Richland County (86%) and Jasper County (14%), Illinois. 75% of its residents live outside city limits. It is in Illinois's 12th congressional district. Its state senate districts are State Senate District 55 (86%) and State Senate District 51 (14%); its state house districts are State House District 110 (86%) and State House District 102 (14%).

576residents (2020 Census)
40.6 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Dundas25%

CountyShare of ZIP residents
Richland County86%
Jasper County14%

Town or county subdivisionShare of ZIP residents
Preston township71%
Smallwood township11%
Denver township10%
German township4.9%
Ste. Marie township2.9%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 12th congressional district (IL-12)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 5586%
State Senate District 5114%

State house districtShare of ZIP residents
State House District 11086%
State House District 10214%

Voting precincts

6 voting precincts overlap ZIP 62425. 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:62425")

ZIP 62425 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.