Michigan City, IN ZIP Codes
Michigan City, Indiana has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Michigan City covers nearby places too.
Where the 46360 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
46361 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Michigan City city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Michigan City
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Michigan City PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 46360 | street delivery Michigan City |
| 46361 | PO boxes at the Marquette Mall post office Marquette Mall |
Why your mail may say Michigan City when you live outside it
Michigan City ZIP codes also cover Coolspring Township, Springfield Township and Michigan Township, so a letter addressed to Michigan City can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. LaPorte County property records show which city you are in.
Michigan City ZIP code questions
What is the main ZIP code for Michigan City?
46360, the ZIP code of the main Michigan City post office at 303 Washington St.
Which Michigan City ZIP codes are for PO boxes only?
46361. Mail to it goes to boxes at the post office, not to street addresses.
What county is Michigan City in?
LaPorte County.
ZIP codes for towns near Michigan City
More towns near Michigan City: Hammond, Calumet City, Mishawaka, Granger, Chicago, Oak Lawn, Cicero, Elkhart, Berwyn.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections