Watertown, Middlesex County, Massachusetts Property Taxes
Median Watertown, MA effective property tax rate: 1.36%, significantly higher than the national median of 1.02%, but lower than the Massachusetts state median of 1.23%.
Median Watertown, MA home value: $721,300
Median annual Watertown, MA tax bill: $9,787, $7,387 higher than the national median property tax bill of $2,400.
How are property taxes in Middlesex County calculated?
Property taxes in Watertown, MA 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 Watertown’s property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Watertown, knowing local tax details benefits homeowners and investors.
Last Updated March 1, 2025
Watertown, Middlesex County, Massachusetts Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.36%
Estimate Property Tax Bill
$9,810
$9,103
Property Tax Rates Across Watertown, Middlesex County, Massachusetts
Local government entities set tax rates, which can vary widely within a state. This is because each county estimates its required budget annually to provide services and divides that by the total value of all taxable property within its jurisdiction, resulting in the property tax rate. While votes and laws are involved in setting tax rates and budgets, this is the annual process in a nutshell.
Watertown in Middlesex County, Massachusetts, has an effective property tax rate of 1.36%, which aligns with the highest and lowest median tax rates in the area. This rate is significantly higher than the national median property tax rate of 1.02%. The median property tax bill in Watertown reflects this difference, with homeowners paying more compared to the national median bill of $2,400. This comparison highlights the variability in property tax rates and bills across different regions, emphasizing the importance of understanding local tax environments.
For homeowners in Watertown, navigating these rates can be challenging, making it crucial to stay informed and consider professional assistance for property tax appeals and 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 Watertown Tax Rate
1.36%
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 Middlesex County Tax Rate
1.22%
Median Effective Massachusetts Tax Rate
1.23%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Watertown, Middlesex County, Massachusetts
Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
02472 | 1.36% | 1.36% | 1.36% | 1.36% | 1.36% |
Source: Ownwell
Property Tax Assessment Values Across Watertown, Middlesex County, Massachusetts
When examining property taxes in Watertown, MA, 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 Middlesex 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 Middlesex County, assessment notices are sent in the spring each year. They’ll typically reach your mailbox by the middle of March. 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 Watertown. For example, the median home price in Watertown is $721,300, with tax bills ranging significantly across the county. The zip code 02472 has the highest median home price at $721,300.
Property Tax Assessment Values Across Watertown, Middlesex County, Massachusetts
Source: Ownwell

$320,300
$928,425
$1,536,550
Median Watertown Market Value
$721,300
Median Middlesex County Market Value
$633,600
Median Massachusetts Market Value
$492,600
Median United States Market Value
$235,294
Property Tax Assessment Values Across Watertown, Middlesex County, Massachusetts
Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
02472 | $435,000 | $554,500 | $721,300 | $871,000 | $985,800 |
Source: Ownwell
Property Tax Bills Across Watertown, Middlesex County, Massachusetts
Property Tax Bills Across Watertown, Middlesex County, Massachusetts
Source: Ownwell

$4,294
$11,232
$18,170
Median Watertown Tax Bill
$9,787
Median Middlesex County Tax Bill
$7,427
Median Massachusetts Tax Bill
$5,844
Median United States Tax Bill
$2,400
Property Tax Bills Across Watertown, Middlesex County, Massachusetts
Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
---|---|---|---|---|---|
02472 | $5,907 | $7,522 | $9,787 | $11,824 | $13,380 |
Source: Ownwell