10 Counties with the Highest Property Tax Rates in New Hampshire

If you are comparing property taxes across New Hampshire, these 10 counties have the highest effective rates in the state. The highest-rate county, Sullivan County, comes in at 2.38% — 0.61% higher than the New Hampshire average (1.77%). The statewide effective rate is 1.77%.

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#CountyEffective RateMedian TaxMedian Home Value
1Sullivan County2.38%$5,616$236,300
2Cheshire County2.32%$5,968$257,200
3Coos County2.07%$3,511$169,600
4Merrimack County2.00%$6,617$330,600
5Strafford County1.98%$6,582$332,400
6Grafton County1.88%$5,624$298,500
7Hillsborough County1.76%$6,791$385,500
8Rockingham County1.63%$7,512$461,400
9Belknap County1.44%$4,897$340,000
10Carroll County1.06%$3,685$348,900

How this ranking is calculated

The effective property tax rate is the median annual property tax paid divided by the median home value in each county, expressed as a percentage. It is the most practical way to compare property tax burden between counties because it neutralizes differences in home values.

Counties with the highest rates in New Hampshire often share a few characteristics: lower home values and/or higher millage rates driven by school and local service funding needs.

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