Sullivan County, New Hampshire Property Taxes
Property Taxes in Sullivan County, New Hampshire
Median Sullivan County effective property tax rate: 2.43%, significantly higher than the national median of 1.02%.
Median Sullivan County home value: $239,400
Median annual Sullivan County tax bill: $5,563, $3,163 higher than the national median property tax bill of $2,400.
How are property taxes in Sullivan County calculated?
Property taxes in Sullivan 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 Sullivan County or another part of Sullivan County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Sullivan County, New Hampshire Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
2.43%
Estimate Property Tax Bill
$5,817
$5,398
How Does the Sullivan County Property Tax Calculator Work?
Use this Sullivan County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Sullivan County's median effective tax rate of 2.43% to generate your estimate.
Enter your property's estimated assessed value — the figure the assessment office 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. Sullivan County’s median effective tax rate is higher than the New Hampshire state median tax rate of 1.82% and far above the national median property tax rate of 1.02%.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Sullivan County.
Property Tax Rates Across Sullivan County, New Hampshire
What Are Effective Property Tax Rates Across Sullivan County?
Local government entities set tax rates, which vary widely across Sullivan 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 Sullivan County's effective property tax rate to other counties in New Hampshire or the U.S. median of 1.02%.
Sullivan County's median effective rate stands at 2.43%, which is higher than the national median of 1.02%. Within Sullivan County, the highest rate is found in Charlestown at 3.64%, while Sunapee has the lowest at 1.00%.
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 Sullivan County Tax Rate
2.43%
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 New Hampshire Tax Rate
1.82%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Sullivan County, New Hampshire
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acworth | 2.58% | 2.58% | 2.58% | 2.58% | 2.58% |
| Alstead | 2.58% | 2.58% | 2.81% | 2.81% | 2.81% |
| Charlestown | 3.63% | 3.64% | 3.64% | 3.64% | 3.64% |
| Claremont | 2.93% | 2.93% | 2.93% | 2.93% | 2.93% |
| Cornish | 1.62% | 1.62% | 1.62% | 1.62% | 1.62% |
| Croydon | 1.50% | 1.50% | 1.50% | 1.50% | 1.50% |
| Enfield | 2.37% | 2.37% | 2.37% | 2.37% | 2.37% |
| Georges Mills | 1.00% | 1.00% | 2.37% | 2.37% | 2.37% |
| Goshen | 2.33% | 2.33% | 2.33% | 2.33% | 2.33% |
| Grantham | 1.96% | 1.96% | 2.17% | 2.17% | 2.17% |
| Hillsborough | 1.52% | 1.52% | 1.52% | 1.52% | 1.52% |
| Langdon | 2.81% | 2.81% | 2.81% | 2.81% | 2.81% |
| Lempster | 2.89% | 2.89% | 2.89% | 2.89% | 2.89% |
| Meriden | 1.57% | 1.57% | 1.57% | 1.58% | 1.58% |
| New London | 2.37% | 2.37% | 2.37% | 2.37% | 2.37% |
| Newport | 1.74% | 2.43% | 2.43% | 2.43% | 2.43% |
| Plainfield | 1.57% | 1.57% | 1.57% | 1.58% | 1.58% |
| South Acworth | 2.58% | 2.58% | 2.58% | 2.58% | 2.58% |
| Springfield | 2.37% | 2.37% | 2.37% | 2.37% | 2.37% |
| Sunapee | 1.00% | 1.00% | 1.00% | 1.00% | 1.00% |
| Unity | 1.74% | 1.74% | 1.74% | 1.74% | 1.74% |
| Washington | 1.52% | 1.52% | 1.52% | 1.52% | 1.52% |
| Guild | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Sullivan County, New Hampshire
When examining property taxes in Sullivan 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 Sullivan County New Hampshire Department of Revenue Administration 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 Sullivan 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. The median tax bill in Sullivan County is $5,563, compared with the national median property tax bill of $2,400 and the national median property tax rate of 1.02%. Tax bills range significantly across the county, with Georges Mills at $7,976 and Unity at $1,522. Meriden has the highest median home price at $458,700.
Property Tax Assessment Values Across Sullivan County, New Hampshire
Source: Ownwell
$87,336
$273,018
$458,700
Median Sullivan County Market Value
$239,400
Median New Hampshire Market Value
$360,500
Median United States Market Value
$235,294
Property Tax Assessment Values Across Sullivan County, New Hampshire
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acworth | $72,946 | $124,050 | $183,900 | $250,250 | $342,140 |
| Alstead | $73,197 | $136,742 | $199,530 | $283,642 | $369,973 |
| Charlestown | $23,060 | $64,250 | $138,400 | $188,150 | $246,740 |
| Claremont | $100,050 | $172,275 | $214,250 | $257,625 | $311,900 |
| Cornish | $230,310 | $312,800 | $399,550 | $523,112 | $691,463 |
| Croydon | $127,110 | $180,725 | $225,750 | $270,875 | $329,620 |
| Enfield | $87,400 | $185,400 | $232,500 | $263,500 | $279,600 |
| Georges Mills | $228,222 | $251,900 | $356,400 | $848,400 | $891,340 |
| Goshen | $3,383 | $74,250 | $144,730 | $201,110 | $259,298 |
| Grantham | $246,000 | $297,400 | $370,600 | $467,500 | $588,000 |
| Hillsborough | $104,740 | $183,025 | $224,500 | $272,219 | $321,290 |
| Langdon | $112,133 | $156,932 | $210,420 | $266,100 | $327,711 |
| Lempster | $70,600 | $118,425 | $158,660 | $202,604 | $259,360 |
| Meriden | $289,700 | $363,300 | $458,700 | $650,300 | $769,920 |
| New London | $201,037 | $232,500 | $279,500 | $402,600 | $499,140 |
| Newport | $97,000 | $169,075 | $233,450 | $315,500 | $413,700 |
| Plainfield | $254,640 | $346,625 | $447,150 | $586,014 | $788,527 |
| South Acworth | $77,769 | $131,532 | $168,965 | $207,600 | $252,400 |
| Springfield | $120,189 | $183,800 | $258,997 | $342,250 | $479,940 |
| Sunapee | $175,140 | $240,000 | $354,700 | $617,900 | $1,364,500 |
| Unity | $52,736 | $67,600 | $87,336 | $193,200 | $308,892 |
| Washington | $107,400 | $194,300 | $278,500 | $372,467 | $483,800 |
| Guild | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Sullivan County, New Hampshire
Property tax bills in Sullivan County, New Hampshire are based on the assessed value of a home and the local tax rate set by taxing authorities. When a home’s assessed value rises, the property tax bill can increase as well, even if the owner’s income does not change. For homeowners, this means taxes are tied more closely to market conditions and local assessments than to the original purchase price.
With a median home price of $239,400, property tax bills in the county can vary widely depending on location and assessment differences. The 25th percentile tax bill is $3,628, while the 75th percentile is $7,420, and the 90th percentile reaches $9,718. That is well above the national median property tax bill of $2,400, showing how costly property taxes can be for many homeowners in the county. The highest median tax bill is $7,976 in Georges Mills, while the lowest median tax bill is $1,522 in Unity.
Median Sullivan County Tax Bill
$5,563
Median New Hampshire Tax Bill
$6,530
Median United States Tax Bill
$2,400
Property Tax Bills Across Sullivan County, New Hampshire
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Acworth | $1,883 | $3,202 | $4,746 | $6,459 | $8,830 |
| Alstead | $2,058 | $3,555 | $5,316 | $7,823 | $10,270 |
| Charlestown | $862 | $2,295 | $4,890 | $6,500 | $8,009 |
| Claremont | $2,856 | $4,888 | $6,142 | $7,344 | $8,763 |
| Cornish | $3,729 | $5,064 | $6,469 | $8,470 | $11,195 |
| Croydon | $1,906 | $2,709 | $3,384 | $4,074 | $5,190 |
| Enfield | $2,068 | $4,387 | $5,501 | $6,234 | $6,615 |
| Georges Mills | $5,197 | $5,726 | $7,976 | $8,824 | $13,148 |
| Goshen | $186 | $1,838 | $3,389 | $4,704 | $6,081 |
| Grantham | $5,256 | $6,343 | $7,808 | $9,710 | $12,493 |
| Hillsborough | $1,596 | $2,790 | $3,422 | $4,149 | $4,896 |
| Langdon | $3,153 | $4,413 | $5,917 | $7,482 | $9,215 |
| Lempster | $2,038 | $3,418 | $4,568 | $5,806 | $7,473 |
| Meriden | $4,562 | $5,722 | $7,225 | $10,242 | $12,126 |
| New London | $4,744 | $5,501 | $6,613 | $9,526 | $11,809 |
| Newport | $2,192 | $3,890 | $5,382 | $7,226 | $9,274 |
| Plainfield | $4,011 | $5,460 | $7,044 | $9,230 | $12,419 |
| South Acworth | $2,007 | $3,395 | $4,361 | $5,358 | $7,102 |
| Springfield | $2,843 | $4,349 | $6,128 | $8,098 | $11,355 |
| Sunapee | $1,755 | $2,414 | $3,575 | $6,257 | $13,672 |
| Unity | $919 | $1,178 | $1,522 | $3,367 | $5,384 |
| Washington | $1,637 | $2,961 | $4,244 | $5,676 | $7,373 |
| Guild | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | March 1 |
Links | |
|---|---|
| Sullivan Tax Assessor | |
| Website | nhtaxkiosk.com |