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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 Code	Classification	City	Population	Timezone	Area Code(s)
ZIP Code 46303	General	Cedar Lake	17,028	Central	219
ZIP Code 46307	General	Crown Point	69,248	Central	219
ZIP Code 46308	P.O. Box	Crown Point	0	Central	219
ZIP Code 46311	General	Dyer	22,431	Central	219
ZIP Code 46312	General	East Chicago	26,370	Central	219
ZIP Code 46319	General	Griffith	18,108	Central	219
ZIP Code 46320	General	Hammond	14,514	Central	219
ZIP Code 46321	General	Munster	23,894	Central	219
ZIP Code 46322	General	Highland	23,984	Central	219
ZIP Code 46323	General	Hammond	22,510	Central	219
ZIP Code 46324	General	Hammond	22,611	Central	219
ZIP Code 46325	P.O. Box	Hammond	0	Central	219
ZIP Code 46327	General	Hammond	11,078	Central	219
ZIP Code 46342	General	Hobart	32,540	Central	219
ZIP Code 46355	P.O. Box	Leroy	0	Central	219
ZIP Code 46356	General	Lowell	18,668	Central	219
ZIP Code 46373	General	Saint John	17,839	Central	219
ZIP Code 46375	General	Schererville	24,051	Central	219
ZIP Code 46376	P.O. Box	Schneider	367	Central	219
ZIP Code 46377	P.O. Box	Shelby	194	Central	219
ZIP Code 46394	General	Whiting	11,725	Central	219
ZIP Code 46401	P.O. Box	Gary	0	Central	219
ZIP Code 46402	General	Gary	5,502	Central	219
ZIP Code 46403	General	Gary	11,649	Central	219
ZIP Code 46404	General	Gary	15,658	Central	219
ZIP Code 46405	General	Lake Station	11,860	Central	219
ZIP Code 46406	General	Gary	8,776	Central	219
ZIP Code 46407	General	Gary	9,862	Central	219
ZIP Code 46408	General	Gary	15,109	Central	219
ZIP Code 46409	General	Gary	6,975	Central	219
ZIP Code 46410	General	Merrillville	39,471	Central	219
ZIP Code 46411	P.O. Box	Merrillville	0	Central	219

Timezone(s):	Central

Population:	6,785,528 (More Details)
Male Population:	3,344,660
Female Population:	3,440,868
Median Age:	38

ZIP Codes:	32
Cities:	19
Counties:	1
Area Codes:	0

Total Area:	627 square miles (county)
Land Area:	499 square miles (county)
Water Area:	128 square miles (county)

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LAKE, IN Demographic Information

* Demographic data is based on 2020 Census.

Total population of LAKE County, IN	498,700
Male population of LAKE County, IN	241,035
Female population of LAKE County, IN	257,665
Median age (years)	39.5
White Population	275,069
Black Population	124,073
Indian Population	3,050
Asian Population	7,553
Hawaiian Population	148
Hispanic Population	99,927
Median age (Male)	38.1
Median age (Female)	40.7
Total households	195,090
Average household size for LAKE County, IN	2.53
Average family size of LAKE County, IN	3.29
Total housing units for LAKE County, IN	214,775

LAKE County, IN Covers 19 Cities