Boundary Atlas

ZIP code 46319: Griffith, IN

ZIP code 46319 is in Griffith (91% of residents) and Ross (5.5%), in Lake County, Indiana. It is in Indiana's 1st congressional district. Its state senate district is State Senate District 1; its state house districts are State House District 12 (94%), State House District 14 (5.5%) and State House District 15 (<0.1%).

18,108residents (2020 Census)
9.6 sq miland area
3cities and towns
1congressional district
15voting precincts

See it on the mapAll of Indiana

City and county

City or townShare of ZIP residents
Griffith91%
Ross5.5%
Schererville0.4%

CountyShare of ZIP residents
Lake County100%

Town or county subdivisionShare of ZIP residents
Calumet township95%
St. John township5.3%

Congressional district

Congressional districtShare of ZIP residents
Indiana's 1st congressional district (IN-01)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IN-01)Frank J. Mrvan (D)202-225-2461100%
U.S. SenatorJim Banks (R)202-224-4814statewide
U.S. SenatorTodd Young (R)202-224-5623 · contact formstatewide
State Senator (State Senate District 1)Dan Dernulc (R)100%
State Representative (State House District 12)Mike Andrade (Democratic)94%
State Representative (State House District 14)Vernon Smith (Democratic)5.5%
State Representative (State House District 15)Hal Slager (R)<0.1%

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 1100%

State house districtShare of ZIP residents
State House District 1294%
State House District 145.5%
State House District 15<0.1%

Voting precincts

15 voting precincts overlap ZIP 46319. Map them, with each precinct's share of the ZIP's residents.

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ZIP 46319 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.