Boundary Atlas

Rock Island, Illinois

Rock Island is a city in Rock Island County, Illinois, with 37,108 residents in 2020. It is in Illinois's 17th congressional district. Its state senate district is State Senate District 36; its state house district is State House District 72.

37,108residents (2020 Census)
17.5 sq miland area
2ZIP codes
1congressional district

County

CountyShare of residents
Rock Island County100%

Congressional district

Congressional districtShare of residents
Illinois's 17th congressional district (IL-17)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-17)Eric Sorensen (D)202-225-5905100%
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 36)Mike Halpin (Democratic)309-558-3612100%
State Representative (State House District 72)Gregg Johnson (Democratic)309-203-1668100%

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 36100%

State house districtShare of residents
State House District 72100%

ZIP codes

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

Get this in your AI agent

Your agent can get Rock Island'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:1765078")

Rock Island 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.