Boundary Atlas

Illinois's 7th congressional district (IL-07)

Illinois's 7th congressional district (IL-07) lies within Cook County, and 49 ZIP codes (21 wholly inside it). Its 2020 population was 753,677. This is the map in force for the November 3, 2026 election.

753,677residents (2020 Census)
1counties
49ZIP codes
395voting precincts

Who represents IL-07

OfficeMemberContact
U.S. Representative (IL-07)Danny K. Davis (D)202-225-5006
U.S. SenatorRichard J. Durbin (D)202-224-2152 · contact form
U.S. SenatorTammy Duckworth (D)202-224-2854 · contact form

Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in IL-07
Cook County14%

ZIP codes

Percentages mark ZIPs only partly in IL-07: the share of that ZIP's residents inside it.

Towns

River Forest township, Oak Park township, Proviso township, Chicago city and Leyden township.

Get this in your AI agent

Your agent can draw every precinct in IL-07, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

get_boundaries(id="us:congressional_district:1707", children_level="precinct", include_districts=True)