Boundary Atlas

ZIP code 61951: Sullivan, IL

ZIP code 61951 is in Sullivan (55% of residents) and Allenville (1.6%), in Moultrie County (100%) and Coles County (0.5%), Illinois. 44% of its residents live outside city limits. It is in Illinois's 15th congressional district. Its state senate districts are State Senate District 54 (99%) and State Senate District 51 (1.2%); its state house districts are State House District 107 (99%) and State House District 101 (1.2%).

8,057residents (2020 Census)
132.1 sq miland area
2cities and towns
1congressional district
13voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Sullivan55%
Allenville1.6%

CountyShare of ZIP residents
Moultrie County100%
Coles County0.5%

Town or county subdivisionShare of ZIP residents
Sullivan township76%
East Nelson township12%
Jonathan Creek township9.0%
Whitley township1.5%
Lovington township0.5%
North Okaw township0.5%
Lowe township0.2%

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 54)Steve McClure (R)217-960-078899%
State Senator (State Senate District 51)Chapin Rose (R)217-607-18531.2%
State Representative (State House District 107)Brad Halbrook (R)217-342-022099%
State Representative (State House District 101)Chris Miller (R)217-508-41081.2%

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 5499%
State Senate District 511.2%

State house districtShare of ZIP residents
State House District 10799%
State House District 1011.2%

Voting precincts

13 voting precincts overlap ZIP 61951. 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:61951")

ZIP 61951 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.