Animal Population
Tick Population by State 2025
Lyme Disease Cases Reported 2000-2020
20K
40K
60K
80K
100K
120K
140K
State | Lyme Disease Cases Reported 2000-2020↓ | Lyme Disease 2020 Confirmed | Lyme Disease 2020 Probable | Lyme Disease 2020 Total | |
|---|---|---|---|---|---|
 | Pennsylvania | 134,624 | 1,646 | 1,185 | 3,334 |
 | New York | 101,300 | 1,409 | 831 | 2,240 |
 | New Jersey | 79,049 | 1,798 | 768 | 2,566 |
 | Connecticut | 55,382 | 399 | 215 | 614 |
 | Massachusetts | 50,332 | 100 | 7 | 107 |
 | Wisconsin | 42,002 | 728 | 719 | 1,447 |
 | Maryland | 31,487 | 524 | 318 | 842 |
 | Minnesota | 29,385 | |||
 | Maine | 21,963 | 824 | 304 | 1,128 |
 | New Hampshire | 20,388 | 172 | 127 | 299 |
 | Virginia | 19,294 | 376 | 179 | 555 |
 | Rhode Island | 13,846 | 507 | 332 | 839 |
 | Delaware | 11,734 | 348 | 7 | 355 |
 | Vermont | 9,675 | 38 | 21 | 59 |
 | West Virginia | 6,644 | 890 | 175 | 1,065 |
 | Illinois | 4,456 | 169 | 126 | 295 |
 | Iowa | 3,744 | 55 | 202 | 257 |
 | Michigan | 3,744 | 266 | 202 | 468 |
 | North Carolina | 3,626 | 104 | 160 | 264 |
 | Ohio | 3,545 | 372 | 37 | 409 |
 | Florida | 2,511 | 65 | 56 | 121 |
 | California | 2,219 | 26 | 27 | 53 |
 | Indiana | 2,013 | 111 | 101 | 212 |
 | Texas | 1,795 | 8 | 3 | 11 |
 | District of Columbia | 1,130 | 78 | 42 | 120 |
 | Oregon | 826 | 5 | 34 | 39 |
 | South Carolina | 766 | 22 | 26 | 48 |
 | Tennessee | 611 | 15 | 23 | 38 |
 | Alabama | 519 | 9 | 5 | 14 |
 | North Dakota | 470 | 10 | 26 | 36 |
 | Washington | 443 | 8 | 12 | 20 |
 | Kansas | 410 | 11 | 6 | 17 |
 | Kentucky | 391 | 11 | 21 | 32 |
 | Missouri | 372 | 7 | 7 | |
 | Georgia | 348 | 5 | 27 | 32 |
 | Arizona | 230 | 1 | 1 | 2 |
 | Utah | 223 | 5 | 9 | 14 |
 | Idaho | 202 | 2 | 4 | 6 |
 | Nevada | 193 | 4 | 4 | |
 | Nebraska | 191 | 4 | 1 | 5 |
 | Alaska | 144 | |||
 | Montana | 120 | 3 | 3 | |
 | South Dakota | 97 | 2 | 6 | 8 |
 | Louisiana | 91 | 1 | 1 | 2 |
 | Arkansas | 87 | 1 | 11 | 12 |
 | Mississippi | 77 | 1 | 1 | |
 | New Mexico | 66 | |||
 | Wyoming | 47 | |||
 | Colorado | 31 | |||
 | Oklahoma | 19 | |||
 | Hawaii | 0 | |||
 | United States | 662,862 | 11,128 | 6,369 | 18,000 |
- Actual tick populations are not tracked but may be inferred by measuring cases of Lyme disease, which is caused exclusively by tick bites
- 2020 data for a handful of states may be slightly incomplete due to complications related to the 2020 COVID-19 pandemic
- Rates in Hawaii are non-reportable by law
- Lyme Disease Estimate: Due to the fact that the CDC’s data only represents confirmed cases, the actual quantity of Lyme disease cases may be notably higher
