Middlesex County, Connecticut Property Taxes
Property Taxes in Middlesex County, Connecticut
Median Middlesex County effective property tax rate: 3.11%, significantly higher than the national median of 1.02%.
Median Middlesex County home value: $210,685
Median annual Middlesex County tax bill: $6,226, $3,826 higher than the national median property tax bill of $2,400.
How are property taxes in Middlesex County calculated?
Property taxes in Middlesex County 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 your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Middlesex County or another part of Middlesex County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Middlesex County, Connecticut Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
3.11%
Estimate Property Tax Bill
$6,552
$6,080
How Does the Middlesex County Property Tax Calculator Work?
Use this Middlesex County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Middlesex County's median effective tax rate of 3.11% to generate your estimate.
Enter your property's estimated assessed value — the figure used for tax purposes, which is typically lower than market value after applicable exemptions. Our calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Middlesex County's median property tax rate is higher than Connecticut's 3.05% state median and far above the 1.02% national median. The county's median property tax bill is $6,226, compared with the $2,400 national median.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Middlesex County.
Property Tax Rates Across Middlesex County, Connecticut
What Are Effective Property Tax Rates Across Middlesex County?
Local government entities set tax rates, which vary widely across Middlesex County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Middlesex County's effective property tax rate to other counties in Connecticut or the U.S. median of 1.02%.
Middlesex County's median effective rate stands at 3.11%, which is higher than the national median of 1.02%. Within Middlesex County, the highest rate is found in COBALT at 3.80%, while OLD SAYBROOK has the lowest at 1.55%.
These variations reflect differences in local school district levies, special assessment districts assessments, and special district bonds — which compound the base county rate.
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
3.11%
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 Connecticut Tax Rate
3.05%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Middlesex County, Connecticut
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Centerbrook | 1.86% | 1.86% | 1.86% | 1.86% | 1.86% |
| Chester | 2.71% | 2.71% | 2.71% | 2.71% | 2.71% |
| Clinton | 3.11% | 3.11% | 3.11% | 3.11% | 3.11% |
| Cobalt | 3.80% | 3.80% | 3.80% | 3.80% | 3.80% |
| Colchester | 2.68% | 2.68% | 2.68% | 2.68% | 2.68% |
| Cromwell | 3.08% | 3.08% | 3.08% | 3.08% | 3.08% |
| Deep River | 3.14% | 3.14% | 3.14% | 3.14% | 3.14% |
| Durham | 3.74% | 3.74% | 3.74% | 3.74% | 3.74% |
| East Haddam | 2.68% | 2.68% | 2.68% | 2.68% | 2.68% |
| East Hampton | 3.80% | 3.80% | 3.80% | 3.80% | 3.80% |
| Essex | 1.86% | 1.86% | 1.86% | 1.86% | 1.86% |
| Haddam | 3.43% | 3.43% | 3.43% | 3.44% | 3.44% |
| Higganum | 3.43% | 3.43% | 3.43% | 3.44% | 3.44% |
| Ivoryton | 1.86% | 1.86% | 1.86% | 1.86% | 1.86% |
| Killingworth | 2.62% | 2.62% | 2.62% | 2.62% | 2.62% |
| Marlborough | 3.80% | 3.80% | 3.80% | 3.80% | 3.80% |
| Middlefield | 2.98% | 2.98% | 2.98% | 2.98% | 2.98% |
| Middle Haddam | 3.80% | 3.80% | 3.80% | 3.80% | 3.80% |
| Middletown | 3.19% | 3.19% | 3.54% | 3.68% | 3.68% |
| Moodus | 2.68% | 2.68% | 2.68% | 2.68% | 2.68% |
| Old Saybrook | 1.55% | 1.55% | 1.55% | 1.55% | 1.55% |
| Portland | 3.43% | 3.43% | 3.43% | 3.43% | 3.43% |
| Rockfall | 2.98% | 2.98% | 2.98% | 2.98% | 2.98% |
| Salem | 2.68% | 2.68% | 2.68% | 2.68% | 2.68% |
| Westbrook | 2.17% | 2.17% | 2.17% | 2.17% | 2.17% |
| East Berlin | N/A | N/A | N/A | N/A | N/A |
| Meriden | N/A | N/A | N/A | N/A | N/A |
| South Glastonbury | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Middlesex County, Connecticut
When examining property taxes in Middlesex County, 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 Connecticut 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 May.
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 Middlesex County.
For example, the median tax bill in Middlesex County is $6,226, with tax bills ranging significantly across the county. Essex has the highest median home price at $392,400.
Property Tax Assessment Values Across Middlesex County, Connecticut
Source: Ownwell
$165,570
$278,985
$392,400
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 Middlesex County, Connecticut
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Centerbrook | $205,160 | $241,450 | $274,800 | $317,925 | $402,090 |
| Chester | $167,020 | $209,265 | $267,225 | $359,188 | $448,126 |
| Clinton | $86,510 | $143,500 | $184,650 | $244,700 | $352,981 |
| Cobalt | $120,908 | $142,658 | $165,570 | $192,330 | $216,464 |
| Colchester | $149,881 | $177,515 | $221,300 | $273,142 | $327,656 |
| Cromwell | $103,880 | $139,948 | $192,150 | $269,640 | $370,125 |
| Deep River | $104,370 | $147,542 | $179,690 | $234,832 | $307,580 |
| Durham | $143,142 | $168,665 | $208,810 | $260,540 | $318,360 |
| East Haddam | $135,882 | $188,882 | $236,460 | $292,192 | $382,463 |
| East Hampton | $107,646 | $134,650 | $169,260 | $218,835 | $276,796 |
| Essex | $205,300 | $283,200 | $392,400 | $567,700 | $904,700 |
| Haddam | $104,422 | $151,475 | $195,520 | $247,210 | $307,870 |
| Higganum | $125,638 | $154,460 | $196,770 | $252,480 | $295,962 |
| Ivoryton | $195,960 | $234,450 | $288,300 | $344,350 | $418,380 |
| Killingworth | $121,660 | $200,480 | $260,330 | $332,885 | $425,376 |
| Marlborough | $288,572 | $292,780 | $347,400 | $428,130 | $529,976 |
| Middlefield | $137,210 | $165,000 | $202,800 | $277,750 | $342,840 |
| Middle Haddam | $150,820 | $175,458 | $206,175 | $240,282 | $316,466 |
| Middletown | $108,320 | $142,520 | $181,090 | $238,895 | $300,106 |
| Moodus | $137,350 | $159,770 | $195,220 | $243,960 | $303,580 |
| Old Saybrook | $241,330 | $296,500 | $377,200 | $508,550 | $760,110 |
| Portland | $124,194 | $143,990 | $177,660 | $236,110 | $285,250 |
| Rockfall | $150,130 | $162,700 | $191,250 | $239,725 | $287,980 |
| Salem | $187,825 | $226,575 | $240,415 | $283,232 | $303,198 |
| Westbrook | $128,737 | $192,130 | $258,050 | $349,792 | $526,317 |
| East Berlin | N/A | N/A | N/A | N/A | N/A |
| Meriden | N/A | N/A | N/A | N/A | N/A |
| South Glastonbury | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Middlesex County, Connecticut
How are property tax bills calculated in Middlesex County, Connecticut?
Property tax bills are based on a home’s assessed value, which is tied to the market value of the property and then multiplied by the local tax rate. That means two homes with similar prices can still have very different bills if they are in different towns or have different assessments. In Middlesex County, the median home price is $210,685, and property tax bills vary widely across the county.
What factors affect the bill? Local tax rates, the assessed value of the home, and municipal budgets all play a role. The county’s 25th percentile tax bill is $4,855, while the 75th percentile is $8,256 and the 90th percentile reaches $10,750. That is well above the national median property tax bill of $2,400.
How does this affect homeowners? Higher assessed values and local rates can create a significant annual expense, especially in towns like Marlborough, where the median tax bill is $13,215, compared with $5,120 in Centerbrook.
Median Middlesex County Tax Bill
$6,226
Median Connecticut Tax Bill
$6,666
Median United States Tax Bill
$2,400
Property Tax Bills Across Middlesex County, Connecticut
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Centerbrook | $3,822 | $4,498 | $5,120 | $5,923 | $7,491 |
| Chester | $4,523 | $5,667 | $7,236 | $9,726 | $12,136 |
| Clinton | $2,704 | $4,469 | $5,753 | $7,622 | $10,993 |
| Cobalt | $4,599 | $5,427 | $6,298 | $7,316 | $8,234 |
| Colchester | $4,011 | $4,750 | $5,922 | $7,310 | $8,768 |
| Cromwell | $3,202 | $4,311 | $5,916 | $8,302 | $11,396 |
| Deep River | $3,275 | $4,630 | $5,639 | $7,369 | $9,652 |
| Durham | $5,352 | $6,305 | $7,807 | $9,724 | $11,903 |
| East Haddam | $3,636 | $5,054 | $6,328 | $7,819 | $10,235 |
| East Hampton | $4,074 | $5,104 | $6,419 | $8,302 | $10,511 |
| Essex | $3,825 | $5,276 | $7,310 | $10,576 | $16,830 |
| Haddam | $3,587 | $5,203 | $6,716 | $8,492 | $10,575 |
| Higganum | $4,316 | $5,306 | $6,764 | $8,672 | $10,166 |
| Ivoryton | $3,650 | $4,368 | $5,371 | $6,416 | $7,794 |
| Killingworth | $3,190 | $5,257 | $6,826 | $8,734 | $11,154 |
| Marlborough | $10,977 | $11,137 | $13,215 | $16,286 | $20,160 |
| Middlefield | $4,070 | $4,914 | $6,039 | $8,276 | $10,216 |
| Middle Haddam | $5,737 | $6,674 | $7,843 | $9,140 | $12,039 |
| Middletown | $3,672 | $5,097 | $6,413 | $8,358 | $10,381 |
| Moodus | $3,675 | $4,278 | $5,225 | $6,540 | $8,140 |
| Old Saybrook | $3,743 | $4,597 | $5,847 | $7,883 | $11,782 |
| Portland | $4,260 | $4,939 | $6,094 | $8,099 | $9,784 |
| Rockfall | $4,474 | $4,848 | $5,700 | $7,144 | $8,582 |
| Salem | $5,026 | $6,063 | $6,434 | $7,579 | $8,113 |
| Westbrook | $2,886 | $4,182 | $5,612 | $7,618 | $11,450 |
| East Berlin | N/A | N/A | N/A | N/A | N/A |
| Meriden | N/A | N/A | N/A | N/A | N/A |
| South Glastonbury | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 20 |
Links | |
|---|---|
| Middlesex Tax Assessor | |
| Website | gis.vgsi.com |