Boundary Atlas

ZIP code 61274: Osco, IL

ZIP code 61274 is in Osco (34% of residents), in Henry County, Illinois. 66% of its residents live outside city limits. It is in Illinois's 16th congressional district. Its state senate districts are State Senate District 47 (92%) and State Senate District 36 (7.6%); its state house districts are State House District 93 (92%) and State House District 71 (7.6%).

317residents (2020 Census)
23.6 sq miland area
1cities and towns
1congressional district
2voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Osco34%

CountyShare of ZIP residents
Henry County100%

Town or county subdivisionShare of ZIP residents
Osco township92%
Western township7.6%

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)309-230-758492%
State Senator (State Senate District 36)Mike Halpin (Democratic)309-558-36127.6%
State Representative (State House District 93)Travis Weaver (R)309-204-651492%
State Representative (State House District 71)Dan Swanson (R)7.6%

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 4792%
State Senate District 367.6%

State house districtShare of ZIP residents
State House District 9392%
State House District 717.6%

Voting precincts

2 voting precincts overlap ZIP 61274. Map them, with each precinct's share of the ZIP's residents.

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ZIP 61274 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.