Property Taxes in Cobb Island, Maryland
Median Cobb Island, Maryland effective property tax rate: 1.16%, significantly higher than the national median of 1.02%, and lower than the Maryland state median of 1.21%.
Median Cobb Island, Maryland home value: $290,700
Median annual Cobb Island, Maryland tax bill: $3,465, $1,065 higher than the national median property tax bill of $2,400.
How are property taxes in Charles County calculated?
Property taxes in Cobb Island, 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 Cobb Island's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Cobb Island, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
How Does the Cobb Island Property Tax Calculator Work?
Use this Cobb Island property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Cobb Island's median effective tax rate of 1.16% — based on actual property records in Charles 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 Cobb Island'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 Cobb Island: rates are 3465.00 in 20625, 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 Cobb Island.
About Cobb Island Property Taxes
About Property Taxes in Cobb Island, Charles, Maryland
Cobb Island's median effective property tax rate of 1.16% is lower than the Maryland state median of 1.21% and higher than the national median of 1.02%. This rate reflects the Charles 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 Cobb Island. Homeowners in the 20625 ZIP code carry a median effective rate of 1.16%, while those in the lowest ZIP also pay 1.16%. This spread reflects how school district boundaries and local assessment districts are drawn across Charles County. Understanding which part of Cobb Island you live in can make a meaningful difference to your annual tax bill.
Cobb Island homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the February 13, 2026 deadline each year.
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 Cobb Island, Charles 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 Cobb Island'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 Cobb Island Tax Rate
1.16%
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 Charles County Tax Rate
1.34%
Median Effective Maryland Tax Rate
1.21%
Median Effective United States Tax Rate
1.27%
Property Tax Rates Across Cobb Island, Charles County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20625 | 0.90% | 1.06% | 1.16% | 1.24% | 1.29% |
Source: Ownwell
Property Tax Assessment Values Across Cobb Island, Charles County, Maryland
When examining property taxes in Cobb Island, 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 Charles County assessment office 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 Charles 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 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 Cobb Island.
For example, the median home price in Cobb Island is $290,700, with tax bills ranging significantly across the county. 20625 has the highest median home price at $290,700.
Property Tax Assessment Values Across Cobb Island, Charles County, Maryland
Source: Ownwell
$43,350
$262,775
$482,200
Median Cobb Island Market Value
$290,700
Median Charles County Market Value
$354,900
Median Maryland Market Value
$338,400
Median United States Market Value
$274,101
Property Tax Assessment Values Across Cobb Island, Charles County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20625 | $35,100 | $215,225 | $290,700 | $448,475 | $652,000 |
Source: Ownwell
Property Tax Bills Across Cobb Island, Charles County, Maryland
Property tax bills in Cobb Island are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value of the property. For homeowners, that means the bill is shaped by both what the home is worth and how local taxing authorities set rates.
With a median home price of $290,700, property taxes can have a meaningful impact on monthly housing costs. The median tax bill in the area is $3,465, which is above the national median property tax bill of $2,400. That means many homeowners in Cobb Island pay more than the typical U.S. homeowner, even before considering differences in home value or exemptions.
Bills can vary widely depending on the property and its location. In this area, the tax bill at the 25th percentile is $2,634, while the 75th percentile reaches $4,964 and the 90th percentile climbs to $6,744. These differences show how assessed value and local tax rates combine to determine what homeowners owe each year.
Median Cobb Island Tax Bill
$3,465
Median Charles County Tax Bill
$4,693
Median Maryland Tax Bill
$4,092
Median United States Tax Bill
$3,209
Property Tax Bills Across Cobb Island, Charles County, Maryland
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 20625 | $1,002 | $2,634 | $3,465 | $4,964 | $6,744 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 13 |
Links | |
|---|---|
| Charles Tax Assessor | |
| Website | sdat.dat.maryland.gov |