Boundary Atlas

Bloomington, Illinois

Bloomington is a city in McLean County, Illinois, with 78,680 residents in 2020. It spans 2 congressional districts: IL-17 (57%) and IL-16 (43%). It spans 3 state senate and 3 state house districts.

78,680residents (2020 Census)
27.1 sq miland area
3ZIP codes
2congressional districts

County

CountyShare of residents
McLean County100%

Congressional districts

Congressional districtShare of residents
Illinois's 17th congressional district (IL-17)57%
Illinois's 16th congressional district (IL-16)43%

Elected officials

OfficeMemberContactShare of residents
MayorDan Brady309-434-2210citywide
U.S. Representative (IL-17)Eric Sorensen (D)202-225-590557%
U.S. Representative (IL-16)Darin LaHood (R)202-225-620143%
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 46)Dave Koehler (Democratic)309-808-234548%
State Senator (State Senate District 44)Sally Turner (R)217-651-829146%
State Senator (State Senate District 53)Chris Balkema (R)815-844-91795.6%
State Representative (State House District 91)Sharon Chung (Democratic)309-808-235148%
State Representative (State House District 88)Regan Deering (R)217-876-196846%
State Representative (State House District 105)Dennis Tipsword (R)815-844-93445.6%

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 residents
State Senate District 4648%
State Senate District 4446%
State Senate District 535.6%

State house districtShare of residents
State House District 9148%
State House District 8846%
State House District 1055.6%

ZIP codes

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

Get this in your AI agent

Your agent can get Bloomington'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:1706613")

Bloomington 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.