Boundary Atlas

Waukegan, Illinois

Waukegan is a city in Lake County, Illinois, with 89,321 residents in 2020. It is in Illinois's 10th congressional district. It spans 2 state senate and 4 state house districts.

89,321residents (2020 Census)
24.3 sq miland area
7ZIP codes
1congressional district

County

CountyShare of residents
Lake County100%

Congressional district

Congressional districtShare of residents
Illinois's 10th congressional district (IL-10)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-10)Bradley Scott Schneider (D)202-225-4835100%
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 30)Adriane Johnson (Democratic)847-672-620184%
State Senator (State Senate District 31)Mary Edly-Allen (Democratic)847-548-563116%
State Representative (State House District 60)Rita Mayfield (Democratic)847-599-280082%
State Representative (State House District 61)Joyce Mason (Democratic)847-485-998611%
State Representative (State House District 62)Laura Faver Dias (Democratic)224-541-44534.3%
State Representative (State House District 59)Dan Didech (Democratic)847-478-99092.4%

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 3084%
State Senate District 3116%

State house districtShare of residents
State House District 6082%
State House District 6111%
State House District 624.3%
State House District 592.4%

ZIP codes

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

Get this in your AI agent

Your agent can get Waukegan'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:1779293")

Waukegan 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.