Delaware ranks #36 among US states for total patents filed in 2025, with 1,020 patents from 558 inventors across 33 cities. On a per-capita basis that is 1.0 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Delaware 2025
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Wilmington, DE | 411 | 248 |
| #2 | Nonatum Mills, DE | 227 | 131 |
| #3 | Hockessin, DE | 88 | 35 |
| #4 | Dover, DE | 70 | 31 |
| #5 | Middletown, DE | 55 | 27 |
| #6 | Bear, DE | 43 | 23 |
| #7 | Claymont, DE | 41 | 8 |
| #8 | Georgetown, DE | 15 | 3 |
| #9 | New Castle, DE | 12 | 7 |
| #10 | Lewes, DE | 9 | 9 |
| #11 | Knowles Crossroads, DE | 6 | 3 |
| #12 | Montchanin, DE | 4 | 1 |
| #13 | Landlith, DE | 4 | 1 |
| #14 | Newport, DE | 4 | 4 |
| #15 | Townsend, DE | 4 | 4 |
| #16 | Garton Development, DE | 3 | 3 |
| #17 | Seaford, DE | 3 | 1 |
| #18 | Harrington, DE | 3 | 2 |
| #19 | Milford, DE | 2 | 2 |
| #20 | Odessa, DE | 2 | 1 |
| #21 | Smyrna, DE | 2 | 2 |
| #22 | Prince George Acres, DE | 1 | 1 |
| #23 | Holly Forest, DE | 1 | 1 |
| #24 | Sabarto East, DE | 1 | 1 |
| #25 | Hampton, DE | 1 | 1 |