Boundary Atlas

ZIP code 62890: Cave, IL

ZIP code 62890 is in Thompsonville (18% of residents), in Franklin County (70%), Williamson County (20%), Hamilton County (7.8%) and Saline County (2.4%), Illinois. 82% of its residents live outside city limits. It is in Illinois's 12th congressional district. Its state senate district is State Senate District 59; its state house district is State House District 117.

2,631residents (2020 Census)
102.6 sq miland area
1cities and towns
1congressional district
11voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Thompsonville18%

CountyShare of ZIP residents
Franklin County70%
Williamson County20%
Hamilton County7.8%
Saline County2.4%

Town or county subdivisionShare of ZIP residents
Cave township53%
Corinth precinct19%
Eastern township14%
South Flannigan township4.3%
Flannigan township3.5%
Tate township2.2%
Frankfort township1.9%
Benton township1.3%
Lake Creek precinct0.9%
Galatia township0.2%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-12)Mike Bost (R)202-225-5661100%
U.S. SenatorRichard J. Durbin (D)202-224-2152 · contact formstatewide
U.S. SenatorTammy Duckworth (D)202-224-2854 · contact formstatewide
State Senator (State Senate District 59)Paul Jacobs (R)618-559-7018100%
State Representative (State House District 117)Patrick Windhorst (R)618-294-8703100%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 59100%

State house districtShare of ZIP residents
State House District 117100%

Voting precincts

11 voting precincts overlap ZIP 62890. 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://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:62890")

ZIP 62890 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.