US 202 was approved by AASHO in June 1934; the route approved was , from Bangor, Maine, to State Road, Delaware, south of Wilmington. In 1964, AASHO approved a request by Delaware to eliminate the portion of US 202 between its intersection with I-295 in Farnhurst and State Road; that stretch was carrying US 13/40/301. US 202 was later shortened so that it ended at I-95 just north of Wilmington. Then in 1984, the route numbering committee approved extending US 202 from there to its intersection with US 13/US 40 in Basin Corner, near New Castle. This intersection is US 202's current terminus.