Boundary Atlas

ZIP code 61115: Machesney Park, IL

ZIP code 61115 is in Machesney Park, in Winnebago County, Illinois. It is in Illinois's 16th congressional district. Its state senate districts are State Senate District 45 (88%) and State Senate District 34 (12%); its state house districts are State House District 90 (88%) and State House District 67 (12%).

22,599residents (2020 Census)
10.6 sq miland area
1cities and towns
1congressional district
16voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Machesney Park100%

CountyShare of ZIP residents
Winnebago County100%

Town or county subdivisionShare of ZIP residents
Harlem township100%

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 45)Andrew Chesney (R)815-232-077488%
State Senator (State Senate District 34)Steve Stadelman (Democratic)815-987-755712%
State Representative (State House District 90)John Cabello (R)815-974-009088%
State Representative (State House District 67)Maurice West (Democratic)815-987-743312%

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 4588%
State Senate District 3412%

State house districtShare of ZIP residents
State House District 9088%
State House District 6712%

Voting precincts

16 voting precincts overlap ZIP 61115. Map them, with each precinct's share of the ZIP's residents.

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ZIP 61115 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.