Boundary Atlas

Woodstock, Illinois

Woodstock is a city in McHenry County, Illinois, with 25,630 residents in 2020. It is in Illinois's 11th congressional district. It spans 2 state senate and 2 state house districts.

25,630residents (2020 Census)
13.2 sq miland area
1ZIP codes
1congressional district

County

CountyShare of residents
McHenry County100%

Congressional district

Congressional districtShare of residents
Illinois's 11th congressional district (IL-11)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-11)Bill Foster (D)202-225-3515100%
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 32)Craig Wilcox (R)815-455-633095%
State Senator (State Senate District 35)Dave Syverson (R)815-987-75554.8%
State Representative (State House District 63)Steve Reick (R)815-880-534095%
State Representative (State House District 69)Joe Sosnowski (R)815-547-34364.8%

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 3295%
State Senate District 354.8%

State house districtShare of residents
State House District 6395%
State House District 694.8%

ZIP codes

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

Get this in your AI agent

Your agent can get Woodstock'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:1783349")

Woodstock 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.