Boundary Atlas

ZIP code 62664: Mason City, IL

ZIP code 62664 is in Mason City (76% of residents), in Mason County, Illinois. 24% of its residents live outside city limits. It is in Illinois's 15th congressional district. Its state senate district is State Senate District 47; its state house district is State House District 94.

2,712residents (2020 Census)
107.0 sq miland area
1cities and towns
1congressional district
7voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Mason City76%

CountyShare of ZIP residents
Mason County100%

Town or county subdivisionShare of ZIP residents
Mason City township85%
Salt Creek township8.3%
Pennsylvania township3.7%
Allens Grove township2.5%
Crane Creek township0.1%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 15th congressional district (IL-15)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IL-15)Mary E. Miller (R)202-225-5271100%
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 47)Neil Anderson (R)309-230-7584100%
State Representative (State House District 94)Norine Hammond (R)309-836-2707100%

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 47100%

State house districtShare of ZIP residents
State House District 94100%

Voting precincts

7 voting precincts overlap ZIP 62664. Map them, with each precinct's share of the ZIP's residents.

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ZIP 62664 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.