Boundary Atlas

ZIP code 61417: Berwick, IL

ZIP code 61417 is in Warren County, Illinois, outside any city or Census-designated place. It is in Illinois's 15th congressional district. Its state senate district is State Senate District 36; its state house district is State House District 71.

206residents (2020 Census)
23.7 sq miland area
0cities and towns
1congressional district
2voting precincts

See it on the mapAll of Illinois

City and county

Outside any city or Census-designated place.


CountyShare of ZIP residents
Warren County100%

Town or county subdivisionShare of ZIP residents
Berwick township79%
Roseville township21%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 15th congressional district (IL-15)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-15)Mary E. Miller (R)202-225-5271100%
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 36)Mike Halpin (Democratic)309-558-3612100%
State Representative (State House District 71)Dan Swanson (R)100%

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 36100%

State house districtShare of ZIP residents
State House District 71100%

Voting precincts

2 voting precincts overlap ZIP 61417. 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:61417")

ZIP 61417 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.