New Castle County, Delaware state by area. It has more people than the other two counties, Kent and Sussex, combined. It is also the most economically developed of the three. Matt Meyer was elected New Castle County Executive in 2016. New Castle County is home to two minor league sports teams: the Wilmington Blue Rocks (baseball) and the Delaware Blue Coats (basketball) which also plays in Wilmington. It also has a professional auto racing track in New Castle known as Airport Speedway, which races on Saturday nights throughout the summer. The first permanent European settlement on Delaware soil was Fort Christina, resulting from Peter
New Castle County, Delaware James, was granted this land by King Charles II. One of the first acts by the Duke was to order removal of all Dutch from New Amsterdam; he renamed New Amstel as New Castle. In 1672, the town of New Castle was incorporated and English law ordered. However, in 1673, the Dutch attacked the territory, reclaiming it for their own. On September 12, 1673, the Dutch established New Amstel in present-day Delaware, fairly coterminous with today's New Castle County. The establishment was not stable, and it was transferred to the British under the Treaty of Westminster on February 9, 1674.