Demographic profile: small city, predominantly white, with notable Latino and African-American presence
New Castle has around 5,000 residents, a predominantly white profile, a historic African-American community, and a growing Latino presence from the Wilmington area.
The city has a small population, around 5 to 6 thousand residents within municipal limits, but is part of a much larger unincorporated area that the IRS and census group as Greater New Castle, comprising tens of thousands of residents. The ethnic composition mirrors northern Delaware: a white majority, a well-established African-American community with deep roots, a growing Latino population, and a smaller share of Asians.
English is the dominant language in commerce and public services. In neighborhoods near Route 9 and the US-13 corridor, Spanish can be heard in everyday commerce, reflecting the Mexican, Guatemalan, and Puerto Rican migration that settled in the region over recent decades. Haitian Creole and some African languages appear in specific parishes and businesses.
The age distribution is balanced, with young families attracted by lower housing prices and retirees who remained in the city. Median income falls below the Philadelphia metropolitan area average, but the lower cost of living compensates, especially without state sales tax.
- English
- Spanish
- Haitian Creole
- Tagalog
- South Asian languages
- Protestant Christianity
- Catholicism
- African-American churches
- No religion
- Islam