Rockville, Montgomery County, Maryland Property Taxes
Median Rockville, MD effective property tax rate: 1.17%, significantly higher than the national median of 1.02%, but lower than the Maryland state median of 1.06%.
Median Rockville, MD home value: $488,200
Median annual Rockville, MD tax bill: $5,813, $3,413 higher than the national median property tax bill of $2,400.
How are property taxes in Montgomery calculated?
Property taxes in Rockville, MD 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 Rockville’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Rockville, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Rockville, Montgomery County, Maryland Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.17%
Estimate Property Tax Bill
$5,712
$5,301
Property Tax Rates Across Rockville, Montgomery County, Maryland
Local government entities are responsible for setting tax rates, which can vary significantly within a state. This variation occurs because each county annually estimates the budget required to provide essential services and divides this by the total value of all taxable property within its jurisdiction, resulting in the property tax rate. Although votes and legislation play roles in determining tax rates and budgets, this is essentially the yearly process.
In Rockville, located in Montgomery County, the effective property tax rate can be compared to other cities in Maryland and the median property tax rates in both the state and the U.S. While Maryland's median property tax rate is slightly above the national median, Rockville's rate provides an interesting point of comparison within the state. The city of Rockville is situated in a county where the highest median tax rate is found in the 20851 zip code, while the lowest is in the 20853 zip code. Understanding these differences can help property owners make informed decisions about their investments and potential savings through property tax appeals or exemptions.
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 Rockville Tax Rate
1.17%
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 Montgomery County Tax Rate
1.11%
Median Effective Maryland Tax Rate
1.06%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Rockville, Montgomery County, Maryland
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
20850 | 1.06% | 1.14% | 1.28% | 1.34% | 1.50% |
20851 | 1.18% | 1.32% | 1.32% | 1.52% | 1.70% |
20852 | 0.87% | 1.03% | 1.14% | 1.22% | 1.34% |
20853 | 0.84% | 0.97% | 1.01% | 1.13% | 1.29% |
20817 | N/A | N/A | N/A | N/A | N/A |
20854 | N/A | N/A | N/A | N/A | N/A |
20855 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Rockville, Montgomery County, Maryland
When examining property taxes in Rockville, 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 Montgomery County Department of Finance 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 Montgomery County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of April. 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 Rockville.
For example, the median home price in Rockville is $488,200, with tax bills ranging significantly across the county. Zip code 20850 has the highest median home price at $561,300.
Property Tax Assessment Values Across Rockville, Montgomery County, Maryland
Source: Ownwell

$110,000
$614,100
$1,118,200
Median Rockville Market Value
$488,200
Median Montgomery County Market Value
$471,000
Median Maryland Market Value
$317,700
Median United States Market Value
$235,294
Property Tax Assessment Values Across Rockville, Montgomery County, Maryland
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
20850 | $230,000 | $360,000 | $561,300 | $694,100 | $921,700 |
20851 | $317,050 | $347,300 | $372,950 | $406,850 | $456,800 |
20852 | $185,000 | $303,000 | $467,600 | $719,200 | $954,960 |
20853 | $390,500 | $438,200 | $518,700 | $647,650 | $786,600 |
20817 | N/A | N/A | N/A | N/A | N/A |
20854 | N/A | N/A | N/A | N/A | N/A |
20855 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Rockville, Montgomery County, Maryland
In Rockville, Montgomery County, MD, property tax bills are determined by assessing the property's market value and applying the local tax rate. With a median home price of $488,200, homeowners face tax bills that vary significantly. The 25th percentile tax bill is $4,275, while the 75th percentile reaches $8,034, and the 90th percentile climbs to $10,307. These figures are notably higher than the national median property tax bill of $2,400, reflecting the region's elevated property values and tax rates. The highest median tax bill in the area is $7,198 in the 20850 zip code, while the lowest is $5,258 in the 20851 zip code.
Such substantial tax obligations can strain homeowners' finances. However, Ownwell offers a solution by providing expert property tax appeal and exemption services. By analyzing local market trends and leveraging their expertise, Ownwell can help homeowners potentially reduce their property tax bills, ensuring they only pay their fair share. This service can lead to significant savings, alleviating the financial burden on Rockville residents.
Median Rockville Tax Bill
$5,813
Median Montgomery County Tax Bill
$5,416
Median Maryland Tax Bill
$3,419
Median United States Tax Bill
$2,400
Property Tax Bills Across Rockville, Montgomery County, Maryland
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
20850 | $2,679 | $4,772 | $7,198 | $9,072 | $11,392 |
20851 | $4,069 | $4,670 | $5,258 | $5,981 | $6,655 |
20852 | $1,952 | $3,294 | $5,446 | $8,321 | $11,052 |
20853 | $3,642 | $4,548 | $5,499 | $6,613 | $8,012 |
20817 | N/A | N/A | N/A | N/A | N/A |
20854 | N/A | N/A | N/A | N/A | N/A |
20855 | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell