ZIP code 61878: Thomasboro, IL

ZIP code 61878 is in Thomasboro (77% of residents), in Champaign County, Illinois. 23% of its residents live outside city limits. It is in Illinois's 15th congressional district. Its state senate districts are State Senate District 52 (100%) and State Senate District 51 (0.4%); its state house districts are State House District 104 (100%) and State House District 101 (0.4%).

1,347residents (2020 Census)

28.0 sq miland area

1cities and towns

1congressional district

5voting precincts

See it on the map All of Illinois

City and county

City or town	Share of ZIP residents
Thomasboro	77%

County	Share of ZIP residents
Champaign County	100%

Town or county subdivision	Share of ZIP residents
Rantoul township	90%
Compromise township	7.0%
Somer township	1.8%
Stanton township	0.6%
Condit township	0.4%

Congressional district

Congressional district	Share of ZIP residents
Illinois's 15th congressional district (IL-15)	100%

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (IL-15)	Mary E. Miller (R)	202-225-5271	100%
U.S. Senator	Richard J. Durbin (D)	202-224-2152 · contact form	statewide
U.S. Senator	Tammy Duckworth (D)	202-224-2854 · contact form	statewide
State Senator (State Senate District 52)	Paul Faraci (Democratic)	217-355-5252	100%
State Senator (State Senate District 51)	Chapin Rose (R)	217-607-1853	0.4%
State Representative (State House District 104)	Brandun Schweizer (R)	217-477-0104	100%
State Representative (State House District 101)	Chris Miller (R)	217-508-4108	0.4%

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

Thomasboro website: https://thomasboro.gov
Thomasboro laws: search for the Thomasboro, Illinois code of ordinances
Champaign County website: http://champaigncountyil.gov
Champaign County laws: search for the Champaign County, Illinois code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 52	100%
State Senate District 51	0.4%

State house district	Share of ZIP residents
State House District 104	100%
State House District 101	0.4%

Voting precincts

5 voting precincts overlap ZIP 61878. 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:

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ZIP 61878 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.