Home and mortgage
New Castle County, DE Property Tax Calculator
New Castle County homeowners pay a median $2,499 a year in property tax, 0.71% of a median $352,200 home: above Delaware's 0.50% but below the national 0.94%.
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Property tax in New Castle County by home value, at 0.71%
| Home value | A year | A month |
|---|---|---|
| $180,000 | $1,278 | $107 |
| $260,000 | $1,846 | $154 |
| $350,000 | $2,485 | $207 |
| $530,000 | $3,763 | $314 |
| $700,000 | $4,970 | $414 |
New Castle County against Delaware and the US
| Effective rate | Median tax | Median home value | Median household income | |
|---|---|---|---|---|
| New Castle County | 0.71% | $2,499 | $352,200 | $91,166 |
| Delaware | 0.50% | $1,768 | $352,000 | $84,954 |
| United States | 0.94% | $3,119 | $332,700 | $80,734 |
How this calculator works
Median real estate taxes paid ÷ median home value in New Castle County, from the Census Bureau's American Community Survey 2020–2024 5-year estimates. The calculator starts at the county's median home value and rate.
Questions people ask
What is the property tax rate in New Castle County?
The effective rate is 0.71%: a median $2,499 a year on a median $352,200 home. That's the 1st highest of the 3 Delaware counties we cover.
How much is property tax on a $400,000 house in New Castle County?
About $2,840 a year, $237 a month, at the county's effective rate, before any exemption.
How does New Castle County compare with the rest of Delaware?
Its rate is above the state's 0.50%. Across Delaware, covered counties range from 0.32% to 0.71%.
How do I lower my New Castle County property tax?
Apply for every exemption you qualify for, such as a homestead exemption, and appeal your assessment if it is higher than comparable homes sold nearby; the county assessor explains the deadlines.
Other Delaware counties
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Sources
Updated by the RateHerald team. The maths is tested against worked examples; report a problem.