Boundary Atlas

ZIP code 61771: Secor, IL

ZIP code 61771 is in Secor (34% of residents), in Woodford 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 46 (58%) and State Senate District 53 (42%); its state house districts are State House District 91 (58%) and State House District 105 (42%).

1,005residents (2020 Census)
26.1 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Secor34%

CountyShare of ZIP residents
Woodford County100%

Town or county subdivisionShare of ZIP residents
Palestine township95%
Olio township2.6%
Montgomery township1.9%
Greene township0.3%
Roanoke 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 46)Dave Koehler (Democratic)309-808-234558%
State Senator (State Senate District 53)Chris Balkema (R)815-844-917942%
State Representative (State House District 91)Sharon Chung (Democratic)309-808-235158%
State Representative (State House District 105)Dennis Tipsword (R)815-844-934442%

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 4658%
State Senate District 5342%

State house districtShare of ZIP residents
State House District 9158%
State House District 10542%

Voting precincts

6 voting precincts overlap ZIP 61771. 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:61771")

ZIP 61771 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.