Find the last 4 digits (ZIP+4) for an address in 46321

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ZIP Code 46321 – Munster, IN

Munster, Indiana · Lake County · Central time

ZIP code46321
CityMunster
StateIndiana
CountyLake County
Population23,733
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area7.59 sq mi
Center (lat, long)41.5475, -87.5033

Area codes in this area

574

These are the area codes that most often serve ZIP 46321 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

46322 Highland · 2.4 mi46324 Hammond · 2.5 mi60438 Lansing · 2.7 mi46323 Hammond · 3.9 mi46320 Hammond · 4.2 mi46319 Griffith · 4.6 mi46375 Schererville · 4.7 mi60409 Calumet City · 5.2 mi

About ZIP 46321

ZIP code 46321 is assigned to Munster, Indiana. It lies in Lake County. Its Census area covers about 7.59 square miles of land. The closest neighboring ZIP is 46322 (Highland), about 2.4 miles away.

Every address in 46321 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources