Cost of living in New Castle, DE — Housing, Rent & Index

The median home value in New Castle, DE is $279,941 as of 2026-04. That places New Castle below the US average for housing cost, with a cost index of approximately 79 versus a national baseline of 100.

Over the past 12 months, the median home value in New Castle has moved sideways, and over the past five years it has averaged +4.6% annual growth. The current price sits -0.3% from its 5-year peak in 2025-08.

Renters pay a median of $1,726 per month in New Castle. Rents have changed — over the last year and averaged — per year over five years.

Beyond housing, day-to-day costs in New Castle are shaped by state and local taxes, utility rates, transportation, and groceries. This page focuses on the housing component, which is the largest single line in most household budgets and the easiest to compare across cities using consistent national data.