McHenry County Area Codes

About McHenry County Area Codes

The county of McHenry County, located in Illinois, is served by 4 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in McHenry County include 224, 779, 815, 847. The county mainly follows the America/Chicago time zone.

Cities and towns served by these area codes in McHenry County include Algonquin, Crystal Lake, Lake In The Hills, Mchenry, Woodstock.

List of Area Codes in McHenry County, Illinois

The table below lists all telephone area codes used in McHenry County, Illinois, along with their associated cities and time zones from this dataset.

Related Area Code Pages

Explore related area code resources on Burning Compass:

• All area codes in Illinois
• Individual area code details are available from the table above.