In 2018, New Castle County, DE had a population of 559k people with a median age of 38.4 and a median household income of $69,479. Between 2017 and 2018 the population of New Castle County, DE declined from 559,793 to 559,335, a -0.0818% decrease and its median household income grew from $66,647 to $69,479, a 4.25% increase.
The 5 largest ethnic groups in New Castle County, DE are White (Non-Hispanic) (56.7%), Black or African American (Non-Hispanic) (25.1%), White (Hispanic) (6.5%), Asian (Non-Hispanic) (5.63%), and Other (Hispanic) (2.48%). 0% of the people in New Castle County, DE speak a non-English language, and 94.1% are U.S. citizens.
In 2018, the median property value in New Castle County, DE was $269,800, and the homeownership rate was 67.9%. Most people in New Castle County, DE drove alone to work, and the average commute time was 24.6 minutes. The average car ownership in New Castle County, DE was 2 cars per household.