New Hampshire ranks #29 among US states for total patents filed all time, with 69,387 patents from 12,181 inventors across 289 cities. On a per-capita basis that is 50.4 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in New Hampshire All Time
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Nashua, NH | 8,878 | 1,592 |
| #2 | Manchester, NH | 3,888 | 595 |
| #3 | Merrimack, NH | 3,229 | 452 |
| #4 | Bedford, NH | 3,078 | 404 |
| #5 | Windham, NH | 2,545 | 335 |
| #6 | Hollis, NH | 2,045 | 312 |
| #7 | Amherst, NH | 1,924 | 319 |
| #8 | Hudson, NH | 1,860 | 319 |
| #9 | Hanover, NH | 1,858 | 312 |
| #10 | Lebanon, NH | 1,835 | 330 |
| #11 | Salem, NH | 1,741 | 325 |
| #12 | Londonderry, NH | 1,395 | 312 |
| #13 | Portsmouth, NH | 1,349 | 252 |
| #14 | Exeter, NH | 1,302 | 228 |
| #15 | Derry, NH | 1,216 | 295 |
| #16 | Concord, NH | 1,182 | 196 |
| #17 | Dover, NH | 1,121 | 261 |
| #18 | Litchfield, NH | 1,036 | 107 |
| #19 | Pelham, NH | 997 | 171 |
| #20 | Bow, NH | 905 | 77 |
| #21 | Goffstown, NH | 805 | 124 |
| #22 | Durham, NH | 796 | 153 |
| #23 | Milford, NH | 763 | 173 |
| #24 | Brookline, NH | 660 | 122 |
| #25 | Stratham, NH | 659 | 98 |