Company: Delaware Outdoor Advertising Markets: Delaware Headquarters: 7460 Lancaster Pike, Hockessin DE 19707 Phone: 302-234-1975 Email: BKilleen@delawareoutdoor.com Delaware Outdoor advertising operates a billboard plant with 36 faces in the following Delaware communities: Wilmington New Castle & Bear Hockessin The company’s President is Brendan Killeen. [wpforms id=”9787″] Paid Advertisement