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LAKE COUNTY, INDIANA

ZIP Code Post Office Date Established Date Discontinued
46303 CEDAR LAKE
46307 CROWN POINT
46311 DYER
46312 EAST CHICAGO
46401 GARY
46319 GRIFFITH
46320 HAMMOND
46342 HOBART
46355 LEROY
46356 LOWELL
46373 SAINT JOHN 01/20/1846
46375 SCHERERVILLE 12/20/1866
46376 SCHNEIDER
46377 SHELBY
46394 WHITING

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