Boundary Atlas

Rosemont, Illinois

Rosemont is a village in Cook County, Illinois, with 3,952 residents in 2020. It spans 3 congressional districts: IL-08 (64%), IL-05 (30%) and IL-03 (6.0%). It spans 3 state senate and 3 state house districts.

3,952residents (2020 Census)
1.8 sq miland area
1ZIP codes
3congressional districts

County

CountyShare of residents
Cook County100%

Congressional districts

Congressional districtShare of residents
Illinois's 8th congressional district (IL-08)64%
Illinois's 5th congressional district (IL-05)30%
Illinois's 3rd congressional district (IL-03)6.0%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-08)Raja Krishnamoorthi (D)202-225-371164%
U.S. Representative (IL-05)Mike Quigley (D)202-225-406130%
U.S. Representative (IL-03)Delia C. Ramirez (D)202-225-57016.0%
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 10)Rob Martwick (Democratic)773-286-111564%
State Senator (State Senate District 28)Laura Murphy (Democratic)847-718-111026%
State Senator (State Senate District 39)Don Harmon (Democratic)708-848-20029.4%
State Representative (State House District 20)Brad Stephens (R)773-444-061164%
State Representative (State House District 55)Justin Cochran (Democratic)217-782-800726%
State Representative (State House District 77)Norma Hernandez (Democratic)708-365-84989.4%

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 1064%
State Senate District 2826%
State Senate District 399.4%

State house districtShare of residents
State House District 2064%
State House District 5526%
State House District 779.4%

ZIP codes

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

Get this in your AI agent

Your agent can get Rosemont'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:1765819")

Rosemont 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.