Tick Population by State 2025

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
State
Lyme Disease Cases Reported 2000-2020
Lyme Disease 2020 Confirmed
Lyme Disease 2020 Probable
Lyme Disease 2020 Total
Pennsylvania Flag
Pennsylvania134,6241,6461,1853,334
New York Flag
New York101,3001,4098312,240
New Jersey Flag
New Jersey79,0491,7987682,566
Connecticut Flag
Connecticut55,382399215614
Massachusetts Flag
Massachusetts50,3321007107
Wisconsin Flag
Wisconsin42,0027287191,447
Maryland Flag
Maryland31,487524318842
Minnesota Flag
Minnesota29,385
Maine Flag
Maine21,9638243041,128
New Hampshire Flag
New Hampshire20,388172127299
Virginia Flag
Virginia19,294376179555
Rhode Island Flag
Rhode Island13,846507332839
Delaware Flag
Delaware11,7343487355
Vermont Flag
Vermont9,675382159
West Virginia Flag
West Virginia6,6448901751,065
Illinois Flag
Illinois4,456169126295
Iowa Flag
Iowa3,74455202257
Michigan Flag
Michigan3,744266202468
North Carolina Flag
North Carolina3,626104160264
Ohio Flag
Ohio3,54537237409
Florida Flag
Florida2,5116556121
California Flag
California2,219262753
Indiana Flag
Indiana2,013111101212
Texas Flag
Texas1,7958311
District of Columbia Flag
District of Columbia1,1307842120
Oregon Flag
Oregon82653439
South Carolina Flag
South Carolina766222648
Tennessee Flag
Tennessee611152338
Alabama Flag
Alabama5199514
North Dakota Flag
North Dakota470102636
Washington Flag
Washington44381220
Kansas Flag
Kansas41011617
Kentucky Flag
Kentucky391112132
Missouri Flag
Missouri37277
Georgia Flag
Georgia34852732
Arizona Flag
Arizona230112
Utah Flag
Utah2235914
Idaho Flag
Idaho202246
Nevada Flag
Nevada19344
Nebraska Flag
Nebraska191415
Alaska Flag
Alaska144
Montana Flag
Montana12033
South Dakota Flag
South Dakota97268
Louisiana Flag
Louisiana91112
Arkansas Flag
Arkansas8711112
Mississippi Flag
Mississippi7711
New Mexico Flag
New Mexico66
Wyoming Flag
Wyoming47
Colorado Flag
Colorado31
Oklahoma Flag
Oklahoma19
Hawaii Flag
Hawaii0
  • 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