Boundary Atlas

ZIP code 61234: Annawan, IL

ZIP code 61234 is in Annawan (74% of residents), in Henry County, Illinois. 26% of its residents live outside city limits. It is in Illinois's 16th congressional district. Its state senate districts are State Senate District 47 (88%) and State Senate District 37 (12%); its state house districts are State House District 93 (88%) and State House District 73 (12%).

1,197residents (2020 Census)
55.7 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Annawan74%

CountyShare of ZIP residents
Henry County100%

Town or county subdivisionShare of ZIP residents
Annawan township86%
Alba township12%
Cornwall township2.0%
Yorktown township0.2%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 16th congressional district (IL-16)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-16)Darin LaHood (R)202-225-6201100%
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 47)Neil Anderson (R)309-230-758488%
State Senator (State Senate District 37)Li Arellano (R)779-251-500312%
State Representative (State House District 93)Travis Weaver (R)309-204-651488%
State Representative (State House District 73)Ryan Spain (R)309-690-737312%

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 4788%
State Senate District 3712%

State house districtShare of ZIP residents
State House District 9388%
State House District 7312%

Voting precincts

4 voting precincts overlap ZIP 61234. 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:61234")

ZIP 61234 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.