Property Tax 101

The median property tax (also known as real estate tax) in New Castle County is $1,385.00 per year, based on a median home value of $252,800.00 and a median effective property tax rate of 0.55% of property value.

New Castle County collects relatively low property taxes, and is ranked in the bottom half of all counties in the United States by property tax collections. Of the three counties in Delaware, New Castle County is ranked 1st by median property taxes, and 1st by median tax as percentage of home value.

Compared to other counties in Delaware, New Castle County collects a relatively high percentage of each property's value as tax. Combined with home values that are $3,400.00 greater than the Delaware median of $249,400.00, this results in the relatively high property taxes in New Castle County.

• County Tax Comparison
• National Tax Comparison
• Other Delaware Counties
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1st out of 3 By median yearly property tax

1st out of 3 By percentage of median home value

0th out of 3 By percentage of median income

You can see how New Castle County (highlighted in green) compares to the three other counties in Delaware with the bar chart above, sorted by median property tax in dollars. For a visual map of county property tax rates in Delaware, see our Delaware county property tax map.

Remember: Real estate prices also play a large part in which Delaware counties have the highest and lowest median property taxes. Higher-valued properties will generally have higher taxes, even if the median percentage of home value levied as property tax is different. For comparisons, you can also use Percentage Of Home Value.

Property tax assessments in New Castle County are the responsibility of the New Castle County Tax Assessor, whose office is located in Wilmington, Delaware.

If you need to pay your property tax bill, ask about a property tax assessment, look up the New Castle County property tax due date, or find property tax records, visit the New Castle County Tax Assessor's page. Applications for the New Castle County homestead exemption, any property tax appeals, and applications for a current use tax reduction must also be submitted to the New Castle County Assessor's Office.

For some properties, you can easily find the most recent tax assessment by looking up the property address with our property records search. You can also use our New Castle County Property Tax Calculator to estimate your property tax based on median tax values (results open in new page).