Lake County, Illinois Zip Codes by Population (2024)

The most populated Zip Code in Lake County, Illinois is 60085, located in Waukegan. * 2024 populations estimated based on the latest ACS 5-year data.

28 Zip Codes

Zip Code
City
Population
60085Waukegan71,465
60073Round Lake62,071
60047Lake Zurich43,750
60089Buffalo Grove42,867
60031Gurnee37,202
60060Mundelein37,131
60030Grayslake35,978
60046Lake Villa34,854
60099Zion31,523
60035Highland Park30,215
60048Libertyville29,452
60015Deerfield27,835
60087Waukegan27,815
60061Vernon Hills27,602
60002Antioch24,398
60045Lake Forest21,159
60084Wauconda17,301
60064North Chicago15,380
60088Great Lakes14,143
60020Fox Lake11,051
60044Lake Bluff10,271
60083Wadsworth9,699
60041Ingleside8,843
60069Lincolnshire8,602
60042Island Lake8,589
60096Winthrop Harbor6,655
60040Highwood5,227
60075Russell0