Find the last 4 digits (ZIP+4) for an address in 46312

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ZIP Code 46312 – East Chicago, IN

East Chicago, Indiana · Lake County · Central time

ZIP code46312
CityEast Chicago
StateIndiana
CountyLake County
Population26,022
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area14.11 sq mi
Center (lat, long)41.6505, -87.4511

Area codes in this area

574

These are the area codes that most often serve ZIP 46312 (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

46327 Hammond · 2.5 mi46394 Whiting · 3.3 mi46320 Hammond · 3.7 mi46406 Gary · 3.8 mi46323 Hammond · 4.2 mi46324 Hammond · 5.3 mi60633 Chicago · 5.8 mi60409 Calumet City · 5.8 mi

About ZIP 46312

ZIP code 46312 is assigned to East Chicago, Indiana. It lies in Lake County. Its Census area covers about 14.11 square miles of land. The closest neighboring ZIP is 46327 (Hammond), about 2.5 miles away.

Every address in 46312 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