Knox County, Maine Property Taxes
Property Taxes in Knox County, Maine
Median Knox County effective property tax rate: 1.43%, significantly higher than the national median of 1.02%.
Median Knox County home value: $222,000
Median annual Knox County tax bill: $3,693, higher than the national median property tax bill of $2,400.
How are property taxes in Knox County calculated?
Property taxes in Knox 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 Knox County property taxes, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Knox County or another part of the county, knowing local tax details benefits homeowners and investors. The median tax rate is 1.43%, and the median annual tax bill is $3,693.
Last Updated April 13, 2026
Knox County, Maine Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.43%
Estimate Property Tax Bill
$3,175
$2,946
How Does the Knox County Property Tax Calculator Work?
Use this Knox County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Knox County's median effective tax rate of 1.43% to generate your estimate.
Enter your property's estimated assessed value — the figure the assessor assigns 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. Knox County’s median property tax rate is higher than Maine’s 1.47% state median tax rate, and the median property tax bill is $3,693, which is $1,293 higher than the state median bill and well above the $2,400 national median property tax bill.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Knox County.
Property Tax Rates Across Knox County, Maine
What Are Effective Property Tax Rates Across Knox County?
Local government entities set tax rates, which vary widely across Knox 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 Knox County's effective property tax rate to other counties in Maine or the U.S. median of 1.02%.
Knox County's median effective rate stands at 1.43%, which is higher than the national median of 1.02%. Within Knox County, the highest rate is found in Rockland at 2.45%, while Camden has the lowest at 1.05%.
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 Knox County Tax Rate
1.43%
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 Maine Tax Rate
1.47%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Knox County, Maine
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Appleton | 2.42% | 2.42% | 2.43% | 2.43% | 2.43% |
| Camden | 1.05% | 1.05% | 1.05% | 1.05% | 1.05% |
| Cushing | 1.07% | 1.07% | 1.07% | 1.08% | 1.08% |
| Friendship | 1.17% | 1.17% | 1.17% | 1.17% | 1.17% |
| Hope | 1.93% | 1.93% | 1.93% | 1.93% | 1.93% |
| North Haven | 1.17% | 1.17% | 1.17% | 1.17% | 1.17% |
| Owls Head | 1.55% | 1.55% | 1.55% | 1.55% | 1.55% |
| Rockland | 2.45% | 2.45% | 2.45% | 2.45% | 2.45% |
| Saint George | 1.18% | 1.18% | 1.18% | 1.19% | 1.19% |
| South Thomaston | 1.30% | 1.30% | 1.30% | 1.30% | 1.30% |
| Spruce Head | 1.18% | 1.18% | 1.19% | 1.19% | 1.19% |
| Tenants Harbor | 1.18% | 1.18% | 1.19% | 1.19% | 1.19% |
| Thomaston | 2.00% | 2.00% | 2.00% | 2.00% | 2.00% |
| Union | 1.72% | 1.72% | 1.72% | 1.72% | 1.72% |
| Vinalhaven | 1.29% | 1.29% | 1.29% | 1.29% | 1.29% |
| Warren | 1.42% | 1.42% | 1.42% | 1.42% | 1.42% |
| Washington | 1.39% | 1.39% | 1.39% | 1.39% | 1.39% |
| Rockport | N/A | N/A | N/A | N/A | N/A |
| West Rockport | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Knox County, Maine
When examining property taxes in Knox 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 Knox County assessor 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 are sent in the spring each year and 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.
The median tax bill in Knox County is $3,693, compared with the national median property tax bill of $2,400. Tax bills range significantly across the county, with Camden reaching the highest median home price at $605,900.
Median Knox County Market Value
$222,000
Median Maine Market Value
$242,800
Median United States Market Value
$235,294
Property Tax Assessment Values Across Knox County, Maine
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Appleton | $84,520 | $117,000 | $161,500 | $211,500 | $268,840 |
| Camden | $318,160 | $447,850 | $605,900 | $859,600 | $1,333,020 |
| Cushing | $136,124 | $219,240 | $317,060 | $513,900 | $824,274 |
| Friendship | $81,690 | $123,375 | $182,200 | $336,500 | $508,800 |
| Hope | $104,400 | $153,525 | $209,200 | $277,200 | $373,620 |
| North Haven | $207,400 | $256,625 | $364,800 | $487,775 | $777,950 |
| Owls Head | $106,710 | $163,650 | $240,950 | $419,750 | $621,010 |
| Rockland | $108,900 | $141,350 | $178,200 | $227,300 | $304,920 |
| Saint George | $131,950 | $170,500 | $228,100 | $375,475 | $595,150 |
| South Thomaston | $161,140 | $227,000 | $316,500 | $467,400 | $651,420 |
| Spruce Head | $117,310 | $162,550 | $264,000 | $439,750 | $719,650 |
| Tenants Harbor | $151,800 | $195,900 | $273,900 | $421,500 | $684,920 |
| Thomaston | $122,300 | $167,175 | $220,550 | $280,700 | $357,960 |
| Union | $132,900 | $187,000 | $254,150 | $333,025 | $455,600 |
| Vinalhaven | $132,600 | $170,950 | $241,700 | $350,000 | $567,000 |
| Warren | $107,880 | $171,825 | $232,500 | $292,700 | $367,300 |
| Washington | $86,070 | $154,925 | $218,900 | $271,400 | $328,990 |
| Rockport | N/A | N/A | N/A | N/A | N/A |
| West Rockport | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Knox County, Maine
Property tax bills in Knox County are based on a home’s assessed value and the local tax rate set by taxing authorities. The assessed value is meant to reflect the market value of the property, and that figure is then multiplied by the applicable tax rate to determine the bill. Factors such as location, property characteristics, and local budget needs can all influence how much a homeowner pays.
With a median home price of $222,000, property tax bills in Knox County can vary widely. The 25th percentile tax bill is $1,821, while the 75th percentile reaches $5,632 and the 90th percentile climbs to $8,503. Camden has the highest median tax bill at $6,372, compared with $2,132 in Friendship. These differences show how much taxes can shift from one area to another, even within the same county.
For homeowners, a higher assessed value or a higher tax rate can mean a larger annual bill, making property taxes an important part of homeownership costs.
Median Knox County Tax Bill
$3,693
Median Maine Tax Bill
$3,569
Median United States Tax Bill
$2,400
Property Tax Bills Across Knox County, Maine
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Appleton | $2,050 | $2,837 | $3,916 | $5,129 | $6,519 |
| Camden | $3,371 | $4,712 | $6,372 | $9,036 | $14,004 |
| Cushing | $1,463 | $2,364 | $3,408 | $5,524 | $8,861 |
| Friendship | $956 | $1,444 | $2,132 | $3,937 | $5,953 |
| Hope | $2,015 | $2,963 | $4,038 | $5,350 | $7,116 |
| North Haven | $2,420 | $2,995 | $4,257 | $5,692 | $9,079 |
| Owls Head | $1,654 | $2,537 | $3,735 | $6,506 | $9,626 |
| Rockland | $2,666 | $3,460 | $4,362 | $5,558 | $7,457 |
| Saint George | $1,564 | $2,020 | $2,703 | $4,449 | $7,053 |
| South Thomaston | $2,095 | $2,951 | $4,115 | $6,076 | $8,468 |
| Spruce Head | $1,390 | $1,926 | $3,128 | $5,211 | $8,903 |
| Tenants Harbor | $1,798 | $2,321 | $3,246 | $4,995 | $8,116 |
| Thomaston | $2,446 | $3,344 | $4,411 | $5,614 | $7,159 |
| Union | $2,368 | $3,244 | $4,376 | $5,741 | $7,836 |
| Vinalhaven | $1,711 | $2,205 | $3,118 | $4,515 | $7,314 |
| Warren | $1,538 | $2,441 | $3,303 | $4,158 | $5,216 |
| Washington | $1,196 | $2,154 | $3,042 | $3,773 | $4,573 |
| Rockport | N/A | N/A | N/A | N/A | N/A |
| West Rockport | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | February 12 |
Links | |
|---|---|
| Knox Tax Assessor | |
| Website | www.axisgis.com |