- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Reports of Lyme Disease in the U.S.
538,775
Total cases of Lyme disease confirmed nationwide (2000 to 2018).
Note:
Due to the fact that the CDC's data only represents confirmed cases, the actual quantity of Lyme disease cases may be far greater. We estimate a total of 5,387,750 true cases of lyme of disease in U.S. since the year 2000.
Most Infected Counties
County | Total Cases |
---|---|
Dutchess County, New York | 11,519 |
Chester County, Pennsylvania | 11,436 |
Fairfield County, Connecticut | 9,739 |
Connecticut (Unknown County) | 9,054 |
Bucks County, Pennsylvania | 8,801 |
Morris County, New Jersey | 8,508 |
Montgomery County, Pennsylvania | 8,237 |
Middlesex County, Massachusetts | 8,168 |
Columbia County, New York | 7,017 |
New London County, Connecticut | 6,515 |
Hunterdon County, New Jersey | 6,345 |
Orange County, New York | 6,302 |
New Haven County, Connecticut | 6,119 |
Monmouth County, New Jersey | 6,115 |
Suffolk County, New York | 5,981 |
Plymouth County, Massachusetts | 5,965 |
York County, Pennsylvania | 5,788 |
New Castle County, Delaware | 5,535 |
Rockingham County, New Hampshire | 5,443 |
Sussex County, New Jersey | 5,426 |

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Data Sources
All Lyme disease prevalence data sourced from the Centers for Disease Control and Prevention's surveillance data.