Area code 302 is the sole area code for the entire state of Delaware and has been in use since its creation in 1947. It serves cities such as Wilmington, Dover, and Newark, and is one of the original area codes still in use without a split or overlay. Delaware’s compact size and relatively stable population have allowed 302 to remain sufficient for decades. It is one of the few remaining area codes in the U.S. with statewide coverage. The 302 code is a point of pride for residents and often appears in business branding, license plates, and local promotions. As the legal home of many U.S. corporations, Wilmington under area code 302 plays a vital national economic role.