Boundary Atlas

ZIP code 46360: Michigan City, IN

ZIP code 46360 is in Michigan City (72% of residents), Trail Creek (4.7%), Long Beach (3.3%) and Town of Pines (1.3%), in LaPorte County (98%) and Porter County (2.5%), Indiana. 19% of its residents live outside city limits. It is in Indiana's 1st congressional district. Its state senate districts are State Senate District 4 (93%) and State Senate District 8 (6.9%); its state house district is State House District 9.

44,209residents (2020 Census)
76.6 sq miland area
7cities and towns
1congressional district
41voting precincts

See it on the mapAll of Indiana

City and county

City or townShare of ZIP residents
Michigan City72%
Trail Creek4.7%
Long Beach3.3%
Town of Pines1.3%
Michiana Shores0.7%
Pottawattamie Park0.5%
Duneland Beach0.4%

CountyShare of ZIP residents
LaPorte County98%
Porter County2.5%

Town or county subdivisionShare of ZIP residents
Michigan township62%
Coolspring township31%
Springfield township4.5%
Pine township2.5%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 493%
State Senate District 86.9%

State house districtShare of ZIP residents
State House District 9100%

Voting precincts

41 voting precincts overlap ZIP 46360. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:46360")

ZIP 46360 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.