Boundary Atlas

ZIP code 62258: Mascoutah, IL

ZIP code 62258 is in Mascoutah (84% of residents) and Fayetteville (2.9%), in St. Clair County, Illinois. 13% of its residents live outside city limits. It is in Illinois's 12th congressional district. Its state senate district is State Senate District 57; its state house district is State House District 114.

10,379residents (2020 Census)
75.4 sq miland area
2cities and towns
1congressional district
8voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Mascoutah84%
Fayetteville2.9%

CountyShare of ZIP residents
St. Clair County100%

Town or county subdivisionShare of ZIP residents
Mascoutah township88%
Engelmann township7.3%
Fayetteville township4.6%
Freeburg township0.5%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 12th congressional district (IL-12)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-12)Mike Bost (R)202-225-5661100%
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 57)Christopher Belt (Democratic)618-875-1212100%
State Representative (State House District 114)Kevin Schmidt (R)618-215-1050100%

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 ZIP residents
State Senate District 57100%

State house districtShare of ZIP residents
State House District 114100%

Voting precincts

8 voting precincts overlap ZIP 62258. Map them, with each precinct's share of the ZIP's residents.

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ZIP 62258 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.