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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

LAKE County, IN ZIP Codes

LAKE County, IN Covers 32 ZIP Codes

ZIP CodeClassificationCityPopulationTimezoneArea Code(s)
ZIP Code 46303GeneralCedar Lake17,028Central219
ZIP Code 46307GeneralCrown Point69,248Central219
ZIP Code 46308P.O. BoxCrown Point0Central219
ZIP Code 46311GeneralDyer22,431Central219
ZIP Code 46312GeneralEast Chicago26,370Central219
ZIP Code 46319GeneralGriffith18,108Central219
ZIP Code 46320GeneralHammond14,514Central219
ZIP Code 46321GeneralMunster23,894Central219
ZIP Code 46322GeneralHighland23,984Central219
ZIP Code 46323GeneralHammond22,510Central219
ZIP Code 46324GeneralHammond22,611Central219
ZIP Code 46325P.O. BoxHammond0Central219
ZIP Code 46327GeneralHammond11,078Central219
ZIP Code 46342GeneralHobart32,540Central219
ZIP Code 46355P.O. BoxLeroy0Central219
ZIP Code 46356GeneralLowell18,668Central219
ZIP Code 46373GeneralSaint John17,839Central219
ZIP Code 46375GeneralSchererville24,051Central219
ZIP Code 46376P.O. BoxSchneider367Central219
ZIP Code 46377P.O. BoxShelby194Central219
ZIP Code 46394GeneralWhiting11,725Central219
ZIP Code 46401P.O. BoxGary0Central219
ZIP Code 46402GeneralGary5,502Central219
ZIP Code 46403GeneralGary11,649Central219
ZIP Code 46404GeneralGary15,658Central219
ZIP Code 46405GeneralLake Station11,860Central219
ZIP Code 46406GeneralGary8,776Central219
ZIP Code 46407GeneralGary9,862Central219
ZIP Code 46408GeneralGary15,109Central219
ZIP Code 46409GeneralGary6,975Central219
ZIP Code 46410GeneralMerrillville39,471Central219
ZIP Code 46411P.O. BoxMerrillville0Central219

Population:6,785,528 (More Details)
Male Population:3,344,660
Female Population:3,440,868
Median Age:38
ZIP Codes:32
Area Codes:0
Total Area:627 square miles (county)
Land Area:499 square miles (county)
Water Area:128 square miles (county)

LAKE, IN Demographic Information

* Demographic data is based on 2020 Census.

Total population of LAKE County, IN498,700
Male population of LAKE County, IN241,035
Female population of LAKE County, IN257,665
Median age (years)39.5
White Population275,069
Black Population124,073
Indian Population3,050
Asian Population7,553
Hawaiian Population148
Hispanic Population99,927
Median age (Male)38.1
Median age (Female)40.7
Total households195,090
Average household size for LAKE County, IN2.53
Average family size of LAKE County, IN3.29
Total housing units for LAKE County, IN214,775

LAKE County, IN Covers 19 Cities