Delaware GuideDelaware, while not the smallest of the United States of America, was the first state to ratify the US Constitution. Delaware is bordered by the states of Maryland, Pennsylvania, and New Jersey. HotelsFind hotels in Lewes, Rehoboth Beach, Newark, New Castle and more. LewesLewes is a city in Delaware. There are a number of different highways leading to Lewes, Delaware: Route 1- starts at the Maryland/Delaware state line. Rehoboth BeachRehoboth Beach is a city in Delaware. Rehoboth is easily accessible from Delaware Route 1 from most points to the north such as Philadelphia and Wilmington. NewarkNewark is in Delaware. While European settlement of the area began in the 17th century, the city was not established by royal charter until 1758. Northern DelawareNorthern Delaware consists mainly of New Castle County, bordering on the Philadelphia and across Delaware Bay from New Jersey Southern DelawareSouthern Delaware consists mainly of Sussex County. The Jolly Trolley is the best way to get around. Central DelawareCentral Delaware consists mainly of Kent County, and contains Dover, the capital.