New Hampshire / Sullivan County
15 municipalities · DRA 2025 rates
Sullivan County property tax rates
The 2025 total property tax rates in Sullivan County run from $8.98 in Croydon to $36.54 in Charlestown per $1,000 of assessed value. The county's median town sits at $17.30, against $16.90 for New Hampshire as a whole, and 8 of its 15 municipalities are above the state median.
- 1Highest Charlestown $36.54
- 2Middle town Cornish $17.30
- 3Lowest Croydon $8.98
- 4Municipalities 15
Every Sullivan County town by 2025 rate
| # | Municipality | 2025 rate | 2024 rate | Change | Bill on $300,000 |
|---|---|---|---|---|---|
| 1 | Charlestown | $36.54 | $36.36 | +$0.18 | $10,962 |
| 2 | Claremont | $30.54 | $29.26 | +$1.28 | $9,162 |
| 3 | Langdon | $28.41 | $28.12 | +$0.29 | $8,523 |
| 4 | Newport | $25.09 | $24.31 | +$0.78 | $7,527 |
| 5 | Grantham | $19.90 | $19.61 | +$0.29 | $5,970 |
| 6 | Unity | $19.65 | $17.43 | +$2.22 | $5,895 |
| 7 | Plainfield | $17.60 | $17.60 | $0.00 | $5,280 |
| 8 | Cornish | $17.30 | $16.19 | +$1.11 | $5,190 |
| 9 | Acworth | $16.06 | $27.04 | −$10.98 | $4,818 |
| 10 | Washington | $15.95 | $15.24 | +$0.71 | $4,785 |
| 11 | Lempster | $15.63 | $28.86 | −$13.23 | $4,689 |
| 12 | Goshen | $14.99 | $23.32 | −$8.33 | $4,497 |
| 13 | Springfield | $13.75 | $23.66 | −$9.91 | $4,125 |
| 14 | Sunapee | $10.55 | $10.01 | +$0.54 | $3,165 |
| 15 | Croydon | $8.98 | $14.99 | −$6.01 | $2,694 |
The spread inside the county is $27.56 per $1,000, so on the same $300,000 assessment a Charlestown owner is billed $8,268.00 more than a Croydon owner. That gap is not all real money: each town assesses at its own share of market value, so the rate comparison is only fair between towns whose equalization ratios are close. The guide to how rates are set explains what goes into each one.
Sullivan County against the state
The median Sullivan County rate moved from $23.32 in 2024 to $17.30 in 2025. 9 of the county's municipalities raised their total rate and 5 lowered it. Together the county's towns and cities carry $8,465,061,706 of assessed valuation including utilities and billed $157,366,022 in 2025 property tax, about $3,654 per resident on 2020 census counts.
The median parts of a Sullivan County rate are municipal $4.87, county $2.18, local school $10.70 and state education $1.09. The county rate pays for the one Sullivan County budget, but it is not one number on bills: each town pays its share of the county tax "according to their proportion of public taxes" (RSA 29:11), and that share is then spread over the town's own assessed valuation, so the per-$1,000 county rate runs from $1.52 to $3.41 across Sullivan County.
Biggest rate changes in Sullivan County
Unity +$2.22; Acworth −$10.98; Lempster −$13.23; Goshen −$8.33; Springfield −$9.91; Croydon −$6.01; moves of $2 or more per $1,000 between 2024 and 2025. Large drops usually come with a revaluation, large rises with a budget or school change; each town page shows which part of the rate moved.
Other New Hampshire counties
The full ranked list of all 234 municipalities is on the New Hampshire property tax rates page, and the appeal page sets out the abatement procedure that applies in every town in Sullivan County.
Source: NH Department of Revenue Administration, 2025 Municipal Tax Rates (completed as of January 23, 2026) (DRA; copy read) and the 2024 report; county membership and population from Wikipedia. Last checked October 20, 2026.