Lake County zip codes are sorted by City/Town, Zip Code and County.
Cedar Lake 46303 Zip Code Lake County, IN
Cedar Lake 46307 Zip Code Lake County, IN
Cedar Lake 46356 Zip Code Lake County, IN
Crown Point 46307 Zip Code Lake County, IN
Dyer 46311 Zip Code Lake County, IN
East Chicago 46312 Zip Code Lake County, IN
East Chicago 46320 Zip Code Lake County, IN
Gary 46402 Zip Code Lake County, IN
Gary 46403 Zip Code Lake County, IN
Gary 46404 Zip Code Lake County, IN
Gary 46405 Zip Code Lake County, IN
Gary 46406 Zip Code Lake County, IN
Gary 46407 Zip Code Lake County, IN
Gary 46408 Zip Code Lake County, IN
Gary 46409 Zip Code Lake County, IN
Gary 46410 Zip Code Lake County, IN
Griffith 46319 Zip Code Lake County, IN
Griffith 46375 Zip Code Lake County, IN
Griffith 46408 Zip Code Lake County, IN
Hammond 46320 Zip Code Lake County, IN
Hammond 46323 Zip Code Lake County, IN
Hammond 46324 Zip Code Lake County, IN
Hammond 46327 Zip Code Lake County, IN
Hammond 46394 Zip Code Lake County, IN
Highland 46322 Zip Code Lake County, IN
Highland 46323 Zip Code Lake County, IN
Hobart 46342 Zip Code Lake County, IN
Hobart 46410 Zip Code Lake County, IN
Lake Dalecarlia 46307 Zip Code Lake County, IN
Lake Dalecarlia 46356 Zip Code Lake County, IN
Lake Station 46342 Zip Code Lake County, IN
Lake Station 46403 Zip Code Lake County, IN
Lake Station 46405 Zip Code Lake County, IN
Lake Station 46409 Zip Code Lake County, IN
Lakes of the Four Seasons 46307 Zip Code Lake County, IN
Lowell 46356 Zip Code Lake County, IN
Merrillville 46307 Zip Code Lake County, IN
Merrillville 46342 Zip Code Lake County, IN
Merrillville 46410 Zip Code Lake County, IN
Munster 46321 Zip Code Lake County, IN
New Chicago 46342 Zip Code Lake County, IN
New Chicago 46405 Zip Code Lake County, IN
Schererville 46307 Zip Code Lake County, IN
Schererville 46311 Zip Code Lake County, IN
Schererville 46319 Zip Code Lake County, IN
Schererville 46373 Zip Code Lake County, IN
Schererville 46375 Zip Code Lake County, IN
Schneider 46376 Zip Code Lake County, IN
Shelby 46356 Zip Code Lake County, IN
Shelby 46377 Zip Code Lake County, IN
St. John 46307 Zip Code Lake County, IN
St. John 46311 Zip Code Lake County, IN
St. John 46373 Zip Code Lake County, IN
Whiting 46394 Zip Code Lake County, IN
Winfield 46307 Zip Code Lake County, IN
46303 Zip Code Lake County, IN
46307 Zip Code Lake County, IN
46311 Zip Code Lake County, IN
46319 Zip Code Lake County, IN
46320 Zip Code Lake County, IN
46341 Zip Code Lake County, IN
46342 Zip Code Lake County, IN
46356 Zip Code Lake County, IN
46373 Zip Code Lake County, IN
46375 Zip Code Lake County, IN
46376 Zip Code Lake County, IN
46403 Zip Code Lake County, IN
46405 Zip Code Lake County, IN
46408 Zip Code Lake County, IN
46409 Zip Code Lake County, IN
46410 Zip Code Lake County, IN
Source: Census
Map Copyright CCCARTO 2026
County/City Zip Codes