Boundary Atlas

South Barrington, Illinois

South Barrington is a village in Cook County, Illinois, with 5,077 residents in 2020. It spans 2 congressional districts: IL-08 (98%) and IL-05 (2.4%). It spans 2 state house districts. Its state senate district is State Senate District 26.

5,077residents (2020 Census)
7.5 sq miland area
1ZIP codes
2congressional districts

County

CountyShare of residents
Cook County100%

Congressional districts

Congressional districtShare of residents
Illinois's 8th congressional district (IL-08)98%
Illinois's 5th congressional district (IL-05)2.4%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-08)Raja Krishnamoorthi (D)202-225-371198%
U.S. Representative (IL-05)Mike Quigley (D)202-225-40612.4%
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 26)Darby Hills (R)224-662-4544100%
State Representative (State House District 52)Marty McLaughlin (R)224-634-830098%
State Representative (State House District 51)Nabeela Syed (Democratic)773-916-65532.4%

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 26100%

State house districtShare of residents
State House District 5298%
State House District 512.4%

ZIP codes

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

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Your agent can get South Barrington'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:1770564")

South Barrington 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.