Saint Andrew the Apostle - Chincoteague Island, Est. 1977 In Accomack County, beginning at the intersection of the Maryland-Virginia state line and the Atlantic Ocean, south along the Atlantic Ocean to the Assawoman Inlet, west along the Assawoman Inlet to the end ofVA-689, west on VA-689 to VA-688, west on VA-688 to Cattail Creek, west along Cattail Creek to Pocomoke Sound, north along Pocomoke Sound and Pocomoke River to the Maryland-Virginia state line, east along the Maryland-Virginia state line to the Atlantic Ocean, which is the starting point.