Boundary Atlas

Countryside, Illinois

Countryside is a city in Cook County, Illinois, with 6,420 residents in 2020. It is in Illinois's 6th congressional district. It spans 3 state senate and 3 state house districts.

6,420residents (2020 Census)
2.9 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
Cook County100%

Congressional district

Congressional districtShare of residents
Illinois's 6th congressional district (IL-06)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-06)Sean Casten (D)202-225-4561100%
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 4)Kimberly Lightford (Democratic)708-632-450051%
State Senator (State Senate District 11)Mike Porfirio (Democratic)708-430-251035%
State Senator (State Senate District 41)John Curran (R)630-297-805814%
State Representative (State House District 8)La Shawn Ford (Democratic)773-750-086651%
State Representative (State House District 21)Abdelnasser Rashid (Democratic)708-956-756335%
State Representative (State House District 82)Nicole La Ha (R)630-755-429614%

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 451%
State Senate District 1135%
State Senate District 4114%

State house districtShare of residents
State House District 851%
State House District 2135%
State House District 8214%

ZIP codes

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

Get this in your AI agent

Your agent can get Countryside'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:1716873")

Countryside 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.