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Pennsylvania
134,624
New York
101,300
New Jersey
79,049
Connecticut
55,382
Massachusetts
50,332
Wisconsin
42,002
Maryland
31,487
Minnesota
29,385
Maine
21,963
New Hampshire
20,388
Virginia
19,294
Rhode Island
13,846
Delaware
11,734
Vermont
9,675
West Virginia
6,644
Illinois
4,456
Iowa
3,744
Michigan
3,744
North Carolina
3,626
Ohio
3,545
Florida
2,511
California
2,219
Indiana
2,013
Texas
1,795
District of Columbia
1,130
Oregon
826
South Carolina
766
Tennessee
611
Alabama
519
North Dakota
470
Washington
443
Kansas
410
Kentucky
391
Missouri
372
Georgia
348
Arizona
230
Utah
223
Idaho
202
Nevada
193
Nebraska
191
Alaska
144
Montana
120
South Dakota
97
Louisiana
91
Arkansas
87
Mississippi
77
New Mexico
66
Wyoming
47
Colorado
31
Oklahoma
19
Tick Population by State 2024
State | Lyme Disease Cases Reported 2000-2020 |
|---|---|
| Pennsylvania | 134,624 |
| New York | 101,300 |
| New Jersey | 79,049 |
| Connecticut | 55,382 |
| Massachusetts | 50,332 |
| Wisconsin | 42,002 |
| Maryland | 31,487 |
| Minnesota | 29,385 |
| Maine | 21,963 |
| New Hampshire | 20,388 |
- 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
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 |