Property Taxes in Knoxville, Maryland
Median Knoxville, Maryland effective property tax rate: 1.26%, significantly higher than the national median of 1.02%, and higher than the Maryland state median of 1.21%.
Median Knoxville, Maryland home value: $302,900
Median annual Knoxville, Maryland tax bill: $3,967, $1,567 higher than the national median property tax bill of $2,400.
How are property taxes in Frederick calculated?
Property taxes in Knoxville, Maryland 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 Knoxville's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Knoxville, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Knoxville Property Tax Calculator Work?
Use this Knoxville property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Knoxville's median effective tax rate of 1.26% — based on actual property records in Frederick County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Knoxville's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Knoxville: rates range from 3,970.00 in 21758 to 3,970.00 in 21758, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Knoxville.
About Knoxville Property Taxes
About Property Taxes in Knoxville, Frederick, Maryland
Knoxville’s median effective property tax rate of 1.26% is higher than the Maryland state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Frederick County base levy combined with local school district levies and special taxing districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Knoxville. Homeowners in the 21758 ZIP code carry a median effective rate of 1.26%, while those in the lowest ZIP code also pay 1.26%. This spread reflects how school district boundaries and local assessment districts are drawn across Frederick County. Understanding which part of Knoxville you live in can make a meaningful difference to your annual tax bill.
Knoxville homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the February 13, 2026 deadline each year.
If your estimated bill 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 Knoxville, Frederick County, Maryland
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 Knoxville's effective property tax rate to other cities in Maryland and the median property tax rates in Maryland and the U.S.
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 Knoxville Tax Rate
1.26%
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 Frederick County Tax Rate
1.23%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Knoxville, Frederick County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21758 | 1.20% | 1.23% | 1.26% | 1.30% | 1.63% |
| 21701 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Knoxville, Frederick County, Maryland
When examining property taxes in Knoxville, Maryland, 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 Frederick 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 are sent in the spring each year and typically reach your mailbox by the middle of the month. 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.
For example, the median home price in Knoxville is $302,900, with a median tax bill of $3,967. That is well above the national median property tax bill of $2,400.
Property Tax Assessment Values Across Knoxville, Frederick County, Maryland
Source: Ownwell
$235,400
$376,075
$516,750
Median Knoxville Market Value
$302,900
Median Frederick County Market Value
$378,800
Median Maryland Market Value
$338,400
Median United States Market Value
$274,101
Property Tax Assessment Values Across Knoxville, Frederick County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21758 | $128,330 | $218,025 | $302,950 | $460,700 | $561,020 |
| 21701 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Knoxville, Frederick County, Maryland
Knoxville property tax bills are based on the assessed value of a home, not its market listing price. Local tax rates are applied to that assessed value to determine the annual bill, so two homes with different assessments can owe very different amounts even if they are in the same area. In Frederick County, the median home price is $302,900, and the median property tax bill is $3,970, which is above the national median property tax bill of $2,400.
Several factors can affect the final bill, including the home’s assessed value, the local tax rate, and any exemptions or adjustments that may apply. For many homeowners, this means property taxes can take a meaningful share of housing costs, especially when assessments rise faster than expected. Bills in the area also vary widely, with the 25th percentile at $2,713, the 75th percentile at $6,256, and the 90th percentile at $8,358.
Median Knoxville Tax Bill
$3,967
Median Frederick County Tax Bill
$4,845
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$3,209
Property Tax Bills Across Knoxville, Frederick County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 21758 | $1,549 | $2,715 | $3,970 | $6,257 | $8,359 |
| 21701 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| Frederick Tax Assessor | |
| Website | sdat.dat.maryland.gov |