Area code 681 is an overlay for all of West Virginia, introduced in 2009 to provide additional numbering capacity for the existing 304 area. It covers the same regions, including Charleston, Morgantown, Huntington, and rural areas across the state. Ten-digit dialing is required throughout West Virginia due to the overlay. While 681 is typically assigned to new mobile numbers and business lines, it supports a broad range of rural and urban communities. It complements 304 in serving West Virginia’s evolving communication needs without changing existing numbers.