There are 18 zip codes in McHenry County, Illinois. The most populated is 60014, located in Crystal Lake. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
60014Crystal Lake48,568
60098Woodstock33,116
60102Algonquin32,227
60050Mchenry31,820
60142Huntley29,449
60156Lake In The Hills28,958
60013Cary26,266
60051Mchenry23,598
60033Harvard13,574
60152Marengo12,264
60097Wonder Lake11,865
60012Crystal Lake11,736
60081Spring Grove9,194
60021Fox River Grove5,199
60071Richmond3,938
60034Hebron2,061
60180Union1,721
60072Ringwood959

McHenry County, Illinois Zip Codes by Population (2024)