In 2019, New Castle County, DE had a population of 559k people with a median age of 39.1 and a median household income of $76,328. Between 2018 and 2019 the population of New Castle County, DE declined from 559,335 to 558,753, a −0.104% decrease and its median household income grew from $69,479 to $76,328, a 9.86% increase.
The 5 largest ethnic groups in New Castle County, DE are White (Non-Hispanic) (56%), Black or African American (Non-Hispanic) (25%), White (Hispanic) (6.89%), Asian (Non-Hispanic) (5.38%), and Two+ (Non-Hispanic) (2.55%). 0% of the households in New Castle County, DE speak a non-English language at home as their primary language.
93.9% of the residents in New Castle County, DE are U.S. citizens.
The largest universities in New Castle County, DE are University of Delaware (6,300 degrees awarded in 2020), Wilmington University (3,558 degrees), and Goldey-Beacom College (467 degrees).
In 2019, the median property value in New Castle County, DE was $272,600, and the homeownership rate was 66.5%. Most people in New Castle County, DE drove alone to work, and the average commute time was 25.3 minutes. The average car ownership in New Castle County, DE was 2 cars per household.
New Castle County, DE borders Kent County, DE, Cecil County, MD, Kent County, MD, Gloucester County, NJ, Salem County, NJ, Chester County, PA, and Delaware County, PA.