Boundary Atlas

ZIP code 60631: Chicago, IL

ZIP code 60631 is in Chicago (99% of residents), in Cook County, Illinois. It is in Illinois's 5th congressional district (74%), Illinois's 9th congressional district (24%) and Illinois's 8th congressional district (2.2%). Its state senate districts are State Senate District 10 (86%), State Senate District 28 (11%) and State Senate District 8 (3.3%); its state house districts are State House District 20 (86%), State House District 55 (11%) and State House District 15 (3.3%).

29,691residents (2020 Census)
3.7 sq miland area
1cities and towns
3congressional districts
25voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Chicago99%

CountyShare of ZIP residents
Cook County100%

Town or county subdivisionShare of ZIP residents
Chicago city99%
Norwood Park township1.4%

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 5th congressional district (IL-05)74%
Illinois's 9th congressional district (IL-09)24%
Illinois's 8th congressional district (IL-08)2.2%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
MayorBrandon Johnson312-744-950099%
U.S. Representative (IL-05)Mike Quigley (D)202-225-406174%
U.S. Representative (IL-09)Janice D. Schakowsky (D)202-225-211124%
U.S. Representative (IL-08)Raja Krishnamoorthi (D)202-225-37112.2%
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)773-286-111586%
State Senator (State Senate District 28)Laura Murphy (Democratic)847-718-111011%
State Senator (State Senate District 8)Ram Villivalam (Democratic)872-208-51883.3%
State Representative (State House District 20)Brad Stephens (R)773-444-061186%
State Representative (State House District 55)Justin Cochran (Democratic)217-782-800711%
State Representative (State House District 15)Michael Kelly (Democratic)773-736-02183.3%

Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1086%
State Senate District 2811%
State Senate District 83.3%

State house districtShare of ZIP residents
State House District 2086%
State House District 5511%
State House District 153.3%

Voting precincts

25 voting precincts overlap ZIP 60631. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:60631")

ZIP 60631 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.