ZIP Codes Box

Lake County, Indiana ZIP codes

32ZIP codes
19Cities and towns
504,725People in ZIP areas
219, 464, 708Area codes

Lake County is in Indiana and the Central Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Lake County

ZIP codeCityTypePopulationMedian income
46303Cedar LakeStandard17,680$84,211
46307Crown PointStandard71,673$107,800
46308Crown PointPO Box only––
46311DyerStandard23,321$116,652
46312East ChicagoStandard26,022$42,125
46319GriffithStandard17,847$74,662
46320HammondStandard14,353$37,158
46321MunsterStandard23,733$110,187
46322HighlandStandard23,680$78,062
46323HammondStandard23,047$59,688
46324HammondStandard21,409$63,052
46325HammondPO Box only––
46327HammondStandard10,597$47,288
46342HobartStandard32,224$75,521
46355LeroyPO Box only––
46356LowellStandard19,721$89,217
46373Saint JohnStandard18,843$127,146
46375ScherervilleStandard24,188$93,160
46376SchneiderPO Box only319$64,205
46377ShelbyPO Box only45$38,958
46394WhitingStandard11,894$66,176
46401GaryPO Box only––
46402GaryStandard5,836$33,529
46403GaryStandard10,929$45,991
46404GaryStandard15,428$42,256
46405Lake StationStandard12,184$60,881
46406GaryStandard9,001$35,839
46407GaryStandard8,577$28,526
46408GaryStandard15,747$47,453
46409GaryStandard7,184$44,667
46410MerrillvilleStandard39,243$64,127
46411MerrillvillePO Box only––

Cities and towns in Lake County

Area codes in Lake County

Questions

How many ZIP codes are in Lake County, IN?
Lake County has 32 ZIP codes, 25 of them standard ZIP codes for street addresses.
What cities are in Lake County?
Lake County ZIP codes cover Gary, Hammond, Crown Point, Merrillville, Cedar Lake, Dyer, East Chicago and Griffith and 11 other places.
What area code is Lake County, IN?
Lake County uses area codes 219, 464, 708, 773, 779, 815 and 872.
What time zone is Lake County in?
Lake County is in Central Time.

Other Indiana counties