Lone Star, TX utilizes an area code overlay in which area codes 903 and 430 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary because two different homes in the same geographic area can have the same seven digit phone number but each would have a different area code. The area code overlay which is in use today was put into service on February 15, 2003 when area code 430 was implemented as an overlay of area code 903.
In addition to Lone Star, TX area codes 903 and 430 serve northeast Texas including the larger cities and communities of Corsicana, Denison, Greenville, Longview, Marshall, Paris, Sherman, Texarkana, and Tyler in addition to many smaller communities within the service area.
Lone Star, TX is located in Morris County and observes the Central Time Zone.
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