New Hampshire / Coös County
20 municipalities · DRA 2025 rates
Coös County property tax rates
The 2025 total property tax rates in Coös County run from $9.45 in Errol to $33.60 in Berlin per $1,000 of assessed value. The county's median town sits at $17.08, against $16.90 for New Hampshire as a whole, and 11 of its 20 municipalities are above the state median.
- 1Highest Berlin $33.60
- 2Near the middle Colebrook $17.08
- 3Lowest Errol $9.45
- 4Municipalities 20
Every Coös County town by 2025 rate
| # | Municipality | 2025 rate | 2024 rate | Change | Bill on $300,000 |
|---|---|---|---|---|---|
| 1 | Berlin | $33.60 | $30.89 | +$2.71 | $10,080 |
| 2 | Stratford | $27.92 | $28.51 | −$0.59 | $8,376 |
| 3 | Northumberland | $27.33 | $22.44 | +$4.89 | $8,199 |
| 4 | Gorham | $23.45 | $28.29 | −$4.84 | $7,035 |
| 5 | Columbia | $21.71 | $22.28 | −$0.57 | $6,513 |
| 6 | Jefferson | $21.66 | $19.99 | +$1.67 | $6,498 |
| 7 | Lancaster | $21.07 | $19.18 | +$1.89 | $6,321 |
| 8 | Shelburne | $20.21 | $18.95 | +$1.26 | $6,063 |
| 9 | Clarksville | $17.85 | $21.71 | −$3.86 | $5,355 |
| 10 | Colebrook | $17.08 | $34.97 | −$17.89 | $5,124 |
| 11 | Dalton | $17.07 | $15.06 | +$2.01 | $5,121 |
| 12 | Whitefield | $16.21 | $16.40 | −$0.19 | $4,863 |
| 13 | Stewartstown | $15.66 | $15.98 | −$0.32 | $4,698 |
| 14 | Milan | $14.66 | $23.33 | −$8.67 | $4,398 |
| 15 | Carroll | $12.08 | $11.90 | +$0.18 | $3,624 |
| 16 | Stark | $11.81 | $10.86 | +$0.95 | $3,543 |
| 17 | Randolph | $10.98 | $11.14 | −$0.16 | $3,294 |
| 18 | Pittsburg | $9.60 | $9.60 | $0.00 | $2,880 |
| 19 | Dummer | $9.46 | $8.72 | +$0.74 | $2,838 |
| 20 | Errol | $9.45 | $9.22 | +$0.23 | $2,835 |
The spread inside the county is $24.15 per $1,000, so on the same $300,000 assessment a Berlin owner is billed $7,245.00 more than a Errol 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.
Coös County against the state
The median Coös County rate moved from $19.06 in 2024 to $17.08 in 2025. 10 of the county's municipalities raised their total rate and 9 lowered it. Together the county's towns and cities carry $5,790,126,089 of assessed valuation including utilities and billed $106,429,115 in 2025 property tax, about $3,413 per resident on 2020 census counts.
The median parts of a Coös County rate are municipal $4.21, county $3.05, local school $8.10 and state education $1.15. The county rate pays for the one Coös 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 $2.09 to $5.31 across Coös County.
Biggest rate changes in Coös County
Berlin +$2.71; Northumberland +$4.89; Gorham −$4.84; Clarksville −$3.86; Colebrook −$17.89; Dalton +$2.01; Milan −$8.67; 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 Coös 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.