Killingworth, Middlesex County, Connecticut Property Taxes

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Property Taxes in Killingworth, Connecticut

Median Killingworth, Connecticut effective property tax rate: 2.62%, significantly higher than the national median of 1.02%, and lower than the Connecticut state median of 3.05%.
Median Killingworth, Connecticut home value: $260,330
Median annual Killingworth, Connecticut tax bill: $6,826, $4,426 higher than the national median property tax bill of $2,400.

How are property taxes in Middlesex calculated?

Property taxes in Killingworth, Connecticut 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 Killingworth's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Killingworth, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Killingworth, Middlesex County, Connecticut Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

2.62%

Estimate Property Tax Bill

$6,821

$6,329

How Does the Killingworth Property Tax Calculator Work?

Use this Killingworth property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Killingworth's median effective tax rate of 2.62% — based on actual property records in Middlesex 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 Killingworth'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 Killingworth: rates range from 2.62% in 06419 to 2.62% in 06419, 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 Killingworth.

About Killingworth Property Taxes

About Property Taxes in Killingworth, Middlesex, Connecticut

Killingworth’s median effective property tax rate of 2.62% is lower than the Connecticut state median of 3.05% and higher than the national median of 1.02%. This rate reflects the Middlesex County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.

Property tax rates are not uniform across Killingworth. Homeowners in the 06419 ZIP code carry a median effective rate of 2.62%, while those in 06419 pay 2.62%. This spread — 0.00 percentage points across the same city — reflects how school district boundaries and local assessment districts are drawn across Middlesex County. Understanding which part of Killingworth you live in can make a meaningful difference to your annual tax bill.

Killingworth homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the February 20, 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 Killingworth, Middlesex County, Connecticut

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 Killingworth's effective property tax rate to other cities in Connecticut and the median property tax rates in Connecticut and the U.S.

Property Tax Rates Across Killingworth, Middlesex County, Connecticut

Source: Ownwell

1.55%

2.68%

3.80%

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 Killingworth Tax Rate

2.62%

Median Effective Middlesex County Tax Rate

3.11%

Median Effective Connecticut Tax Rate

3.05%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Killingworth, Middlesex County, Connecticut

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
06419	2.62%	2.62%	2.62%	2.62%	2.62%

Source: Ownwell

Property Tax Assessment Values Across Killingworth, Middlesex County, Connecticut

When examining property taxes in Killingworth, Connecticut, 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.

Assessment notices:

In Middlesex County, assessment notices are sent in the spring each year. They'll 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. The median home price in Killingworth is $260,330, and the median tax bill is $6,826, compared with the national median property tax rate of 1.02% and national median property tax bill of $2,400. In 06419, the median home price and median tax bill are both $260,330 and $6,826.

Property Tax Assessment Values Across Killingworth, Middlesex County, Connecticut

Source: Ownwell

$165,570

$278,985

$392,400

Median Killingworth Market Value

$260,330

Median Middlesex County Market Value

$210,685

Median Connecticut Market Value

$209,000

Median United States Market Value

$235,294

Property Tax Assessment Values Across Killingworth, Middlesex County, Connecticut

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
06419	$121,660	$200,480	$260,330	$332,885	$425,376

Source: Ownwell

Property Tax Bills Across Killingworth, Middlesex County, Connecticut

Property tax bills in Killingworth are calculated by applying the local tax rate to a home’s assessed value, which is based on the market value set by the town. For homeowners, that means the final bill depends on both the value of the property and the rate used by the local tax authority.

With a median home price of $260,330, property taxes can add up quickly. The typical bill in the area is $6,826, which is well above the national median property tax bill of $2,400 and also higher than the national median property tax rate of 1.02%. Bills in the area vary widely, with the 25th percentile at $5,257 and the 75th percentile at $8,734. At the high end, the 90th percentile reaches $11,154.

For homeowners, this means tax costs can have a major impact on monthly budgets and long-term affordability.

Property Tax Bills Across Killingworth, Middlesex County, Connecticut

Source: Ownwell

$5,120

$9,168

$13,215

Median Killingworth Tax Bill

$6,826

Median Middlesex County Tax Bill

$6,226

Median Connecticut Tax Bill

$6,666

Median United States Tax Bill

$2,400

Property Tax Bills Across Killingworth, Middlesex County, Connecticut

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
06419	$3,190	$5,257	$6,826	$8,734	$11,154

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	February 20

Links
Middlesex Tax Assessor
Website	gis.vgsi.com

Frequently Asked Property Tax Questions in Killingworth, Connecticut

How are property taxes calculated in Killingworth, Connecticut?

Property taxes in Killingworth, Connecticut are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Killingworth, Connecticut?

To appeal your property taxes in Killingworth, Connecticut, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Killingworth, Connecticut?

Common property tax exemptions in Killingworth, Connecticut include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Killingworth, Connecticut?

Property tax deadlines in Killingworth, Connecticut vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Killingworth, Connecticut?

Ownwell provides professional property tax appeal services in Killingworth, Connecticut. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.