California, Florida, Texas, Pennsylvania, and New York top the list of the 25 most tick-infected U.S. states, according to a report by Terminix. This is largely due to their warm climates, high humidity, and abundance of green spaces, per the report.
This report reveals which states are facing the greatest tick pressure and risk of tick-borne illnesses based on proprietary 2024 pest management data.
New York City, Los Angeles, Philadelphia, San Francisco, and Washington, D.C. rank as the top five tick-infested cities in the country. Overall, the Northeastern region of the U.S. generally experiences the highest populations of ticks, with common species including the black-legged tick and the American dog tick.
Top 10 Most Tick-infested States
- California
- Florida
- Texas
- Pennsylvania
- New York
- Georgia
- New Jersey
- Arizona
- Massachusetts
- Ohio
According to the federal Centers for Disease Control and Prevention (CDC), Northeastern states like Pennsylvania, New York, and New Jersey, as well as parts of the Upper Midwest, are often identified as the worst places for ticks in the U.S. due to their high rates of Lyme disease cases. Southeast and Southcentral U.S. might see more cases of ehrlichiosis or spotted fever rickettsiosis.
