ZIP code 60012: Crystal Lake, IL

ZIP code 60012 is in Crystal Lake (31% of residents) and Prairie Grove (16%), in McHenry County, Illinois. 53% of its residents live outside city limits. It is in Illinois's 11th congressional district. Its state senate district is State Senate District 32; its state house district is State House District 63.

10,916residents (2020 Census)

17.3 sq miland area

5cities and towns

1congressional district

13voting precincts

See it on the map All of Illinois

City and county

City or town	Share of ZIP residents
Crystal Lake	31%
Prairie Grove	16%
Ridgefield	0.7%
Burtons Bridge	0.7%
Bull Valley	0.3%

County	Share of ZIP residents
McHenry County	100%

Town or county subdivision	Share of ZIP residents
Nunda township	99%
Dorr township	0.9%

Congressional district

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

Elected officials

Office	Member	Contact	Share of residents
U.S. Representative (IL-11)	Bill Foster (D)	202-225-3515	100%
U.S. Senator	Richard J. Durbin (D)	202-224-2152 · contact form	statewide
U.S. Senator	Tammy Duckworth (D)	202-224-2854 · contact form	statewide
State Senator (State Senate District 32)	Craig Wilcox (R)	815-455-6330	100%
State Representative (State House District 63)	Steve Reick (R)	815-880-5340	100%

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

Crystal Lake website: http://www.crystallake.org/
Crystal Lake laws: search for the Crystal Lake, Illinois code of ordinances
Prairie Grove website: https://www.prairiegrove.org/
Prairie Grove laws: search for the Prairie Grove, Illinois code of ordinances
McHenry County website: http://www.co.mchenry.il.us
McHenry County laws: search for the McHenry County, Illinois code of ordinances

State legislative districts

State senate district	Share of ZIP residents
State Senate District 32	100%

State house district	Share of ZIP residents
State House District 63	100%

Voting precincts

13 voting precincts overlap ZIP 60012. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:60012")

ZIP 60012 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.