Boundary Atlas

Oak Park, Illinois

Oak Park is a village in Cook County, Illinois, with 54,583 residents in 2020. It is in Illinois's 7th congressional district. It spans 2 state senate and 2 state house districts.

54,583residents (2020 Census)
4.7 sq miland area
3ZIP codes
1congressional district

County

CountyShare of residents
Cook County100%

Congressional district

Congressional districtShare of residents
Illinois's 7th congressional district (IL-07)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-07)Danny K. Davis (D)202-225-5006100%
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 39)Don Harmon (Democratic)708-848-200291%
State Senator (State Senate District 4)Kimberly Lightford (Democratic)708-632-45008.8%
State Representative (State House District 78)Camille Lilly (Democratic)773-473-730091%
State Representative (State House District 8)La Shawn Ford (Democratic)773-750-08668.8%

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 3991%
State Senate District 48.8%

State house districtShare of residents
State House District 7891%
State House District 88.8%

ZIP codes

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

Get this in your AI agent

Your agent can get Oak Park'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:1754885")

Oak Park 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.