Arlington Heights, Illinois

Where Is Area Code 224?

Area code 224 is in northeastern Illinois. It serves the same region as area code 847 in the Chicago suburbs north and northwest of the city. Arlington Heights is one of the best-known communities in this area code.

Area code 224 covers parts of Cook County, Lake County, McHenry County, Kane County, and DuPage County. Major cities and communities in the 224 and 847 service area include Arlington Heights, Evanston, Elgin, Waukegan, Northbrook, Schaumburg, Highland Park, and Park Ridge.

This area includes suburbs along Lake Michigan in the North Shore and inland communities in the northwest suburbs. Notable places in the region include Northwestern University in Evanston, Chicago Botanic Garden in Glencoe, and O'Hare International Airport, which is next to several communities in the 224 service area.

History of Area Code 224

Area code 224 was established on January 5, 2002. It was added as an overlay to area code 847, which had been created in 1996 from a split of area code 708.

The 224 overlay was introduced because the suburbs north and northwest of Chicago needed more phone numbers. After the overlay began, new numbers in the region could be assigned either 847 or 224. This change made 10-digit dialing necessary across the overlay area.

Key Facts About Area Code 224

• Area code 224 is in Illinois, and Arlington Heights is one of the major communities in its service area.
• Area code 224 uses the Central Time Zone, which is UTC-6 in standard time and UTC-5 during daylight saving time.
• Area code 224 is an overlay area code, and it shares the same territory as area code 847.
• Area code 224 officially entered service on January 5, 2002.
• Area code 224 serves suburbs north and northwest of Chicago, including parts of Cook, Lake, McHenry, Kane, and DuPage counties.
• Area code 224 covers communities that include Evanston, Elgin, Waukegan, Arlington Heights, Northbrook, Schaumburg, and Highland Park.
• Northwestern University in Evanston is within the 224 and 847 numbering plan area.
• The 224 service area includes part of the Lake Michigan shoreline in suburban northeastern Illinois.

Frequently Asked Questions

What state is area code 224 in?

Area code 224 is in Illinois.

What major cities use area code 224?

Major cities and communities in area code 224 include Arlington Heights, Evanston, Elgin, Waukegan, Schaumburg, Northbrook, Highland Park, and Park Ridge.

Is area code 224 a toll-free number?

No. Area code 224 is a geographic area code for northeastern Illinois.