Wilmington Flag

Wilmington

County Seat:
Yes
Area (mi²):
10.895
State:
Delaware

Wilmington is a city located in New Castle County, Delaware. Wilmington has a 2026 population of 73,176. It is also the county seat of New Castle County. Wilmington is currently growing at a rate of 1.46% annually and its population has increased by 3.29% since the most recent census, which recorded a population of 70,842 in 2020.

73.2K
Total Population
6,716
Density (mi²)
1.1K 1.46%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)