773 Area Code
Chicago (surrounding neighborhoods), Illinois
Area code 773 is located in Chicago (surrounding neighborhoods), Illinois. It covers Chicago (NW side), Chicago (SW side), and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 773?
Area code 773 is located in Chicago (surrounding neighborhoods), Illinois. It covers Chicago (NW side), Chicago (SW side), and surrounding areas in the Central time zone (UTC-6).
Cities Covered by Area Code 773
Area code 773 primarily serves the Chicago (surrounding neighborhoods) area of Illinois. The exact coverage includes Chicago (NW side), Chicago (SW side), and Chicago (NE side), along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 773 operates in the Central Time Zone. When calling 773 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 773
Area code 773 was introduced in 1996 as a geographic area code serving Chicago (surrounding neighborhoods), Illinois. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.