Delaware Route 42 (DE 42) is a state highway in Kent County, Delaware. It runs from DE 6 in Blackiston east to DE 9 in Leipsic. DE 42 passes through rural areas along with the towns of Kenton and Cheswold. The route intersects DE 300 in Kenton, DE 15 between Seven Hickories and Moores Corner, and U.S. Route 13 (US 13) in Cheswold. The road was built as a state highway during the 1920s and 1930s. DE 42 was designated by 1936 between Kenton and Leipsic and extended to Blackiston by 1966.