Sleepy Hollow, Illinois Area Code
Sleepy Hollow, IL is officially utilizing an area code overlay in which area codes 224 and 847 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Sleepy Hollow, IL area code information read more about area codes 224 and 847 details and Illinois area codes.
Sleepy Hollow, IL is located in Kane County and observes the Central Time Zone.
View our Times by Area Code tool.