I created this site to help me with evaluating the property taxes across the state of NH. This information is based on the annual report the state produces as a .pdf document here: https://www.revenue.nh.gov/mun-prop/municipal/documents/18-tax-rates.pdf
For ease of use, I've copied the information into a sortable list to easily evaluate towns throughout the state. You can even review them by county now.
I hope you find it a useful source of information. If you have any suggestions, please let me know.