903 Area Code
Northeastern Texas, Texas
Area code 903 is located in Northeastern Texas, Texas. It covers Tyler, Longview, and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 903?
Area code 903 is located in Northeastern Texas, Texas. It covers Tyler, Longview, and surrounding areas in the Central time zone (UTC-6).
Area code 903 is overlaid by area code 430. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 903
Area code 903 primarily serves the Northeastern Texas area of Texas. The exact coverage includes Tyler, Longview, and Texarkana (TX), along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 903 operates in the Central Time Zone. When calling 903 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 903
Area code 903 was introduced in 1990 as a geographic area code serving Northeastern Texas, Texas. As demand for phone numbers grew, overlay code 430 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.