New Castle, New Castle County, Delaware Property Taxes
Median NEW CASTLE, DE effective property tax rate: 0.71%, significantly lower than the national median of 1.02%.
Median NEW CASTLE, DE home value: $197,190
Median annual NEW CASTLE, DE tax bill: $1,414, $986 lower than the national median property tax bill of $2,400.
How are property taxes in NEW CASTLE calculated?
Property taxes in NEW CASTLE, DE 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 NEW CASTLE’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in NEW CASTLE, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
New Castle, New Castle County, Delaware Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
0.71%
Estimate Property Tax Bill
$1,400
$1,299
Ownwell’s NEW CASTLE Property Tax Bill Calculator empowers homeowners, real estate investors, and potential buyers to estimate their annual property taxes in NEW CASTLE with just two data points.
By entering your property's estimated assessed value, our calculator applies NEW CASTLE’s median effective tax rate to accurately estimate your property tax bill. Note that your property's assessed value — determined by your county — reflects any exemptions you may have, ensuring a precise calculation for your property tax obligations.
This insightful tool helps you understand potential tax liabilities and highlights how Ownwell can assist in reducing property taxes in 10003.
For those interested in more localized information, please scroll down to explore city-level trends!
Property Tax Rates Across New Castle, New Castle County, Delaware
Local government entities determine tax rates, leading to significant variations within a state. Each year, counties estimate their necessary budget to provide services and divide this by the total value of all taxable property within their jurisdiction, resulting in the property tax rate. Although votes and laws play a role in setting tax rates and budgets, this is essentially the annual process.
In New Castle, DE, property tax rates reflect these local determinations. When comparing New Castle’s effective property tax rate to other cities in Delaware and across the U.S., it’s important to note that Delaware’s property tax rates can differ significantly from the national median. Nationally, the median property tax rate is 1.02%, while New Castle offers a more favorable rate, enhancing its appeal to property owners. With New Castle’s property tax rate being lower than the national average, it provides a cost-effective option for those seeking to manage their property tax expenses efficiently. This comparison underscores the importance of understanding local tax rates and how they can impact property ownership costs.
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 New Castle Tax Rate
0.71%
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 New Castle County Tax Rate
0.84%
Median Effective Delaware Tax Rate
1.41%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across New Castle, New Castle County, Delaware
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
19720 | 0.32% | 0.57% | 0.71% | 0.84% | 1.06% |
Source: Ownwell
Property Tax Assessment Values Across New Castle, New Castle County, Delaware
When examining property taxes in New Castle, DE, 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.
In New Castle County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of the season. 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 providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in New Castle. For example, the median home price in New Castle is $197,190, with tax bills ranging significantly across the county. Zip code 19720 has the highest median home price at $197,190.
Property Tax Assessment Values Across New Castle, New Castle County, Delaware
Source: Ownwell

$71,775
$387,113
$702,450
Median New Castle Market Value
$197,190
Median New Castle County Market Value
$248,490
Median Delaware Market Value
$64,200
Median United States Market Value
$235,294
Property Tax Assessment Values Across New Castle, New Castle County, Delaware
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
19720 | $101,655 | $157,050 | $197,190 | $259,650 | $323,640 |
Source: Ownwell
Property Tax Bills Across New Castle, New Castle County, Delaware
Median New Castle Tax Bill
$1,414
Median New Castle County Tax Bill
$2,154
Median Delaware Tax Bill
$1,362
Median United States Tax Bill
$2,400
Property Tax Bills Across New Castle, New Castle County, Delaware
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
19720 | $540 | $1,018 | $1,414 | $1,896 | $2,491 |
Source: Ownwell