Illinois ranks #7 among US states for total patents filed in 2025, with 13,040 patents from 6,351 inventors across 482 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 Illinois 2025
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Chicago, IL | 2,695 | 1,510 |
| #2 | Bloomington, IL | 623 | 205 |
| #3 | Champaign, IL | 428 | 141 |
| #4 | Naperville, IL | 406 | 218 |
| #5 | Evanston, IL | 355 | 200 |
| #6 | Lake Forest, IL | 280 | 32 |
| #7 | Palatine, IL | 196 | 76 |
| #8 | Normal, IL | 193 | 70 |
| #9 | Urbana, IL | 191 | 97 |
| #10 | Northbrook, IL | 184 | 93 |
| #11 | Glenview, IL | 152 | 86 |
| #12 | Peoria, IL | 149 | 91 |
| #13 | Arlington Heights, IL | 148 | 80 |
| #14 | Vernon Hills, IL | 139 | 61 |
| #15 | Hoffman Estates, IL | 129 | 55 |
| #16 | Schaumburg, IL | 128 | 70 |
| #17 | Aurora, IL | 124 | 65 |
| #18 | Geneseo, IL | 119 | 14 |
| #19 | Buffalo Grove, IL | 113 | 66 |
| #20 | Savoy, IL | 110 | 14 |
| #21 | Libertyville, IL | 108 | 50 |
| #22 | Wilmette, IL | 104 | 52 |
| #23 | Lisle, IL | 101 | 44 |
| #24 | Barrington Hills, IL | 96 | 7 |
| #25 | Dunlap, IL | 94 | 56 |