Where Is Area Code 773?
Area code 773 serves Chicago, Illinois, mainly outside the downtown central business district traditionally associated with area code 312. It is a geographic area code located in Cook County, in the Great Lakes region of the United States.
The 773 area includes many Chicago neighborhoods on the North, West, and South sides. These communities include Lake View, Rogers Park, Austin, and Hyde Park. Chicago phone numbers can also use area codes 312 and 872 because 872 overlays both 312 and 773.
The area includes neighborhoods along Chicago’s Lake Michigan shoreline. Notable locations associated with the 773 geographic area include Wrigley Field in Lake View and the University of Chicago in Hyde Park.
Cities and Communities in the 773 Area Code
History of Area Code 773
The North American Numbering Plan assigned area code 312 to Chicago in 1947. Area code 773 was established in 1996 through a split of 312. The split left 312 focused on the Loop and nearby central business areas, while 773 covered most of the rest of Chicago.
The split responded to growing demand for telephone numbers from landlines, wireless phones, fax machines, and other services. In 2009, area code 872 was introduced as an overlay for both 312 and 773. An overlay adds another area code to the same geographic region without replacing existing numbers.
Key Facts About Area Code 773
- Area code 773 is an Illinois area code primarily associated with the city of Chicago.
- Area code 773 is located in Cook County, Illinois.
- Area code 773 is part of the Great Lakes region of the United States Census classification.
- Area code 773 is a geographic area code, not an original toll-free code.
- Area code 773 was created in 1996 through a split of Chicago’s original area code, 312.
- Area code 872 has overlaid the 773 and 312 geographic areas since 2009.
- Area code 773 uses Central Time.
- No official U.S. Census population total exists for area code 773 because telephone area-code boundaries do not match census boundaries.
- Wrigley Field and the University of Chicago are located in Chicago neighborhoods associated with the 773 geographic area.
Frequently Asked Questions
What state is area code 773 in?
Area code 773 is in Illinois.
What major cities use area code 773?
Chicago is the major city associated with area code 773.
What time zone is area code 773 in?
Area code 773 uses Central Time.
Is area code 773 a toll-free number?
No. Area code 773 is a geographic area code, not a toll-free number.