Louisiana ranks #38 among US states for total patents filed all time, with 34,954 patents from 10,876 inventors across 339 cities. On a per-capita basis that is 7.5 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Louisiana All Time
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Baton Rouge, LA | 8,737 | 1,896 |
| #2 | New Orleans, LA | 3,685 | 1,220 |
| #3 | Lafayette, LA | 2,915 | 823 |
| #4 | Metairie, LA | 1,534 | 530 |
| #5 | Shreveport, LA | 1,517 | 570 |
| #6 | Houma, LA | 983 | 353 |
| #7 | Slidell, LA | 719 | 290 |
| #8 | Mandeville, LA | 718 | 220 |
| #9 | Covington, LA | 651 | 189 |
| #10 | Lake Charles, LA | 642 | 243 |
| #11 | Bossier City, LA | 552 | 168 |
| #12 | Kenner, LA | 541 | 194 |
| #13 | Monroe, LA | 513 | 148 |
| #14 | New Iberia, LA | 497 | 168 |
| #15 | Youngsville, LA | 475 | 118 |
| #16 | Thibodaux, LA | 399 | 112 |
| #17 | Harahan, LA | 325 | 66 |
| #18 | Broussard, LA | 317 | 94 |
| #19 | West Monroe, LA | 310 | 104 |
| #20 | Gonzales, LA | 295 | 80 |
| #21 | Prairieville, LA | 293 | 84 |
| #22 | Gretna, LA | 286 | 121 |
| #23 | Waggaman, LA | 282 | 67 |
| #24 | Ruston, LA | 262 | 113 |
| #25 | Sulphur, LA | 247 | 98 |