New Castle city, Delaware Demographics & Population 2026

Population Overview

New Castle city is a small city located in Delaware. The total population is 5,519. It ranks as the 21st most populous out of 79 cities and towns in Delaware.

Age Demographics

The median age in New Castle city is 46.4 years. This is 12% higher than the state median of 41.5 years.

Economy, Income & Housing

The median household income in New Castle city is $92,565. This is 12% higher than the state median of $82,855. Compared to the national median of $78,538, household income here is 18% higher. The poverty rate stands at 3.4%. This is 68% lower than the state poverty rate of 10.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 1.1%. This is 78% lower than the state rate of 5.1%. The median home value is $262,100. Housing costs are 20% lower than the state median of $326,800. With a home-value-to-income ratio of just 2.8x, New Castle city is one of the most affordable housing markets in the area. 63.5% of occupied housing units are owner-occupied. This homeownership rate is 12% lower than the state average of 72.3%.

Race & Ethnicity

The largest racial or ethnic group in New Castle city is White (non-Hispanic), making up 64.5% of the population. Black or African American residents account for 27.8%. The Hispanic or Latino population (5.2%) is well below the state average of 10.7%. The Asian population (0.9%) is well below the state average of 4.1%.

Education

32.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 9% lower than the state rate of 35.3%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.7%. Notably, 18.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for New Castle city, Delaware is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Delaware state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 79 Census-designated places in Delaware. For official data, visit data.census.gov.