Historic New Castle, New Castle County, Delaware Property Taxes

$774 avg. annual savings

No Upfront Costs

You only pay if we save

Property Taxes in Historic New Castle, Delaware

Median Historic New Castle, Delaware effective property tax rate: 0.58%, significantly lower than the national median of 1.02%, and lower than the Delaware state median of 0.58%.
Median Historic New Castle, Delaware home value: $225,135
Median annual Historic New Castle, Delaware tax bill: $1,274, lower than the national median property tax bill of $2,400.

How are property taxes in New Castle calculated?

Property taxes in Historic New Castle, Delaware are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding Historic New Castle's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Historic New Castle, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Historic New Castle, New Castle County, Delaware Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

0.58%

Estimate Property Tax Bill

$1,306

$1,212

How Does the Historic New Castle Property Tax Calculator Work?

Use this Historic New Castle property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Historic New Castle's median effective tax rate of 0.58% — based on actual property records in New Castle County — to generate your estimate.

Enter your property's estimated assessed value — the figure used to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Historic New Castle's median effective rate across local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Historic New Castle: rates are 0.58% in 19720, with no ZIP-level variation shown in the available data.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Historic New Castle.

About Historic New Castle Property Taxes

About Property Taxes in Historic New Castle, New Castle, Delaware

Historic New Castle’s median effective property tax rate of 0.58% is lower than the Delaware state median and lower than the national median of 1.02%. This rate reflects the New Castle County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.

Property tax rates are not uniform across Historic New Castle. Homeowners in the 19720 ZIP code carry a median effective rate of 0.58%, while those in the lowest ZIP also pay 0.58%. This spread reflects how school district boundaries and local assessment districts are drawn across New Castle County. Understanding which part of Historic New Castle you live in can make a meaningful difference to your annual tax bill.

Historic New Castle homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before March 14, 2026.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Historic New Castle, New Castle County, Delaware

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Historic New Castle's effective property tax rate to other cities in Delaware and the median property tax rates in Delaware and the U.S.

Property Tax Rates Across Historic New Castle, New Castle County, Delaware

Source: Ownwell

0.35%

1.20%

2.05%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Historic New Castle Tax Rate

0.58%

Median Effective New Castle County Tax Rate

0.80%

Median Effective Delaware Tax Rate

1.33%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Historic New Castle, New Castle County, Delaware

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
19720	0.29%	0.43%	0.58%	0.95%	2.87%

Source: Ownwell

Property Tax Assessment Values Across Historic New Castle, New Castle County, Delaware

When examining property taxes in Historic New Castle, Delaware, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The New Castle County appraisal district estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In New Castle County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month when notices are sent.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By understanding how assessed and market values are determined, property owners can better navigate their tax responsibilities in Historic New Castle.

For example, the median home price in Historic New Castle is $225,135, with tax bills ranging significantly across the county. Zip code 19720 has the highest median home price at $225,135.

Property Tax Assessment Values Across Historic New Castle, New Castle County, Delaware

Source: Ownwell

$99,090

$472,410

$845,730

Median Historic New Castle Market Value

$225,135

Median New Castle County Market Value

$290,430

Median Delaware Market Value

$66,000

Median United States Market Value

$235,294

Property Tax Assessment Values Across Historic New Castle, New Castle County, Delaware

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
19720	$40,490	$123,862	$225,135	$288,225	$361,917

Source: Ownwell

Property Tax Bills Across Historic New Castle, New Castle County, Delaware

Property tax bills in Historic New Castle are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. That means the bill depends on both the value of the home and the tax rate set by local governments. For a home with a median market value of $225,135, the tax bill can vary widely depending on how the property is assessed and where it is located within the county.

Homeowners in Historic New Castle see a range of tax bills that reflect these differences. The 25th percentile tax bill is $968, while the 75th percentile is $1,665, and the 90th percentile reaches $2,251. The median tax bill in ZIP code 19720 is $1,274. These amounts can affect monthly housing costs and overall affordability, especially for homeowners whose assessed value rises faster than their income.

Property Tax Bills Across Historic New Castle, New Castle County, Delaware

Source: Ownwell

$783

$6,865

$12,947

Median Historic New Castle Tax Bill

$1,274

Median New Castle County Tax Bill

$2,329

Median Delaware Tax Bill

$1,454

Median United States Tax Bill

$2,400

Property Tax Bills Across Historic New Castle, New Castle County, Delaware

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
19720	$596	$968	$1,274	$1,665	$2,251

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	March 14

Links
New Castle Tax Assessor
Website	www3.newcastlede.gov

Frequently Asked Property Tax Questions in Historic New Castle, Delaware

How are property taxes calculated in Historic New Castle, Delaware?

Property taxes in Historic New Castle, Delaware are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Historic New Castle, Delaware?

To appeal your property taxes in Historic New Castle, Delaware, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Historic New Castle, Delaware?

Common property tax exemptions in Historic New Castle, Delaware include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Historic New Castle, Delaware?

Property tax deadlines in Historic New Castle, Delaware vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Historic New Castle, Delaware?

Ownwell provides professional property tax appeal services in Historic New Castle, Delaware. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.