Zip Code ReportLake County ZIP codes
Every ZIP code in Lake County, Indiana, with the city it serves. Open any one for a free neighborhood report.
32 ZIP codes · Lake County, IN · FIPS 18089
ZIP codes
32 in this county46303Cedar Lake46307Crown Point46308Crown PointPO box46311Dyer46312East Chicago46319Griffith46320Hammond46321Munster46322Highland46323Hammond46324Hammond46325HammondPO box46327Hammond46342Hobart46355Leroyunique46356Lowell46373Saint John46375Schererville46376Schneider46377Shelby46394Whiting46401GaryPO box46402Gary46403Gary46404Gary46405Lake Station46406Gary46407Gary46408Gary46409Gary46410Merrillville46411MerrillvillePO box
5 of these ZIP codes route mail only. A PO-box or single-recipient ZIP has no residential area behind it, so neighborhood statistics can't be computed for it — those pages say so instead of showing numbers.