Middletown is a town in New Castle County, Delaware, United States. According to the 2021 Census, the population of the town is 24,164. Geography and climate Middletown is located at (39.4495560, –75.7163207) with an elevation of . According to the United States Census Bureau, the town has a total area of , of which is land and 0.16% is water. Infrastructure Transportation The Delaware Route 1 toll road passes along the east edge of Middletown, and the town has a signed exit at Odessa for Delaware Route 299. The U.S. Route 301 toll road is just west and north of Middletown, serving the Chesapeake Bay Bridge to the southwest. US 301 has exits for Middletown at DE 299 west of town and Delaware Route 71 north of town. DE 71 passes north–south through Middletown on Broad Street and heads north to the Summit Bridge and south to Townsend and U.S. Route 13. DE 299 passes east–west through Middletown on Main Street. Delaware Route 15, a rural road, is concurrent with DE 299 at Middletown, allowing access to Dover and Smyrna. DART First State serves Middletown along the Route 43 bus, which runs between the Amazon fulfillment center and a park and ride in Odessa during rush hours, and the Route 63 bus, which serves as a circulator route through Middletown between the Amazon fulfillment center and the park and ride lot in Odessa. From the park and ride lot in Odessa, riders have access to the Route 301 bus to Wilmington and Dover and the seasonal Route 305 "Beach Connection" bus to Lewes and Rehoboth Beach. The Route 37 bus provides rush hour weekday service between the Amazon fulfillment center in Middletown and Wilmington via the Christiana Mall while the Route 47 bus provides rush hour and Saturday service between the Amazon fulfillment center in Middletown and Wilmington via U.S. Route 13. The Route 302 bus provides intercounty service between Newark and Dover via Middletown, serving the Amazon fulfillment center. Cecil Transit operates a Demand Response route twice a month between Cecilton, Maryland and Middletown, providing residents of southern Cecil County access to shopping and healthcare in Middletown. The Delmarva Central Railroad's Delmarva Subdivision line runs through the center of Middletown. Summit Airport is just to the north of the town. The larger Wilmington Airport is in New Castle, and the nearest airport with commercial air service is the Philadelphia