Boundary Atlas

Chatham, Illinois

Chatham is a village in Sangamon County, Illinois, with 14,404 residents in 2020. It is in Illinois's 13th congressional district. It spans 2 state senate and 2 state house districts.

14,404residents (2020 Census)
7.5 sq miland area
3ZIP codes
1congressional district

County

CountyShare of residents
Sangamon County100%

Congressional district

Congressional districtShare of residents
Illinois's 13th congressional district (IL-13)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-13)Nikki Budzinski (D)202-225-2371100%
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 48)Doris Turner (Democratic)217-670-182896%
State Senator (State Senate District 54)Steve McClure (R)217-960-07884.4%
State Representative (State House District 95)Mike Coffey (R)96%
State Representative (State House District 108)Wayne Rosenthal (R)4.4%

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

State legislative districts

State senate districtShare of residents
State Senate District 4896%
State Senate District 544.4%

State house districtShare of residents
State House District 9596%
State House District 1084.4%

ZIP codes

Percentages mark ZIPs only partly in Chatham: the share of that ZIP's residents living in it.

Get this in your AI agent

Your agent can get Chatham's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:place:1712684")

Chatham here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.