Wilmington is the largest city in the state Delaware, United States, and the county seat of New Castle County. It had 72,664 people in 2000. It now has 70,851 people as of 2010.
Wilmington has an area of about 17 sq mi (44.0 km2) and is 92 ft (28.0 m) above sea level, at the place where the Christina River and Brandywine Creek meet.
U.S. President Joe Biden is from Wilmington and owns a home here.