Boundary Atlas

ZIP code 60827: Riverdale, IL

ZIP code 60827 is in Riverdale (43% of residents), Chicago (29%) and Calumet Park (28%), in Cook County, Illinois. It is in Illinois's 2nd congressional district (72%) and Illinois's 1st congressional district (28%). Its state senate districts are State Senate District 14 (71%) and State Senate District 15 (29%); its state house districts are State House District 28 (71%) and State House District 29 (29%).

24,936residents (2020 Census)
7.0 sq miland area
3cities and towns
2congressional districts
19voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Riverdale43%
Chicago29%
Calumet Park28%

CountyShare of ZIP residents
Cook County100%

Town or county subdivisionShare of ZIP residents
Thornton township37%
Calumet township34%
Chicago city29%

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 2nd congressional district (IL-02)72%
Illinois's 1st congressional district (IL-01)28%

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 Johnson312-744-950029%
U.S. Representative (IL-02)Robin L. Kelly (D)202-225-077372%
U.S. Representative (IL-01)Jonathan L. Jackson (D)202-225-437228%
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 14)Emil Jones (Democratic)773-995-774871%
State Senator (State Senate District 15)Napoleon Harris (Democratic)708-893-055229%
State Senator (State Senate District 17)Elgie Sims (Democratic)773-933-7715<0.1%
State Representative (State House District 28)Bob Rita (Democratic)708-396-282271%
State Representative (State House District 29)Thaddeus Jones (Democratic)708-825-117429%
State Representative (State House District 30)Will Davis (Democratic)708-799-7300<0.1%
State Representative (State House District 34)Nick Smith (Democratic)773-783-8800<0.1%

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 1471%
State Senate District 1529%
State Senate District 17land only

State house districtShare of ZIP residents
State House District 2871%
State House District 2929%
State House District 30land only
State House District 34land only

Voting precincts

19 voting precincts overlap ZIP 60827. 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:60827")

ZIP 60827 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.