Deer ticks transmit Lyme disease. Be on the lookout for them when you're in these areas.

Lyme disease is a bacterial infection that is transmitted through the bite of infected black-legged ticks, commonly known as deer ticks. It can cause flu-like symptoms, joint pain and even long-term neurological issues if left untreated. Cases of Lyme disease have been rising in the United States, particularly in regions where deer ticks thrive, but knowing where these ticks are most prevalent can help you take steps to protect yourself and your loved ones.

Ticks typically live in wooded and grassy areas, waiting for animals or people to pass by so they can latch on and feed. Some regions of the country, as well as specific types of environments, put people at a higher risk of exposure. Whether you're hiking in the woods or simply spending time in your backyard, it's important to be aware of where ticks are most likely to be found, as well as how to avoid them.

Here are some of the places you're most likely to encounter ticks that carry Lyme disease:

1. Northeast – States like Connecticut, Massachusetts, Vermont and New York have high rates of Lyme disease. The area's dense forests and abundant deer populations create ideal habitats for ticks.
2. Mid-Atlantic – Maryland, Pennsylvania and New Jersey experience a high incidence of Lyme disease. The mix of suburban developments adjacent to wooded areas facilitates tick-human interactions.
3. Upper Midwest – Lyme disease is prevalent in the Upper Midwest, including Wisconsin and Minnesota. The combination of wooded regions and lakeshores provides favorable environments for ticks. ​
4. Pacific Coast – While less common than in other parts of the country, parts of Northern California and Oregon have reported Lyme disease cases. The western black-legged tick in these regions can carry the disease.
5. Areas with high grass and dense vegetation – Regardless of the region, locations that have tall grasses, leaf litter and dense vegetation are prime tick habitats. Even if you're not in an area prone to Lyme disease, ticks can transmit other illnesses such as Rocky Mountain Spotted Fever, babesiosis and anaplasmosis so it's still important to be vigilant.

Protecting Yourself from Ticks

Take these preventive measures to avoid tick bites. It's the best way to protect yourself from Lyme disease and other tick-borne illnesses.

• Dress appropriately. Wear long sleeves and pants when venturing into wooded or grassy areas. Tucking pants into socks creates a barrier against ticks.​
• Use insect repellent. Apply repellents containing DEET on exposed skin and picaridin on clothing. These ingredients are effective in deterring ticks.​
• Perform tick checks. After outdoor activities, thoroughly inspect your body, clothing and pets for ticks. Prompt removal reduces the chance of disease transmission.​
• Maintain your yard. Keep grass trimmed and remove leaves and debris to reduce tick habitats around your home.​
• Shower after outdoor activities. Showering within two hours of being outdoors can help remove unattached ticks and is an opportunity to thoroughly check your body and hair for ticks.​

Knowing where ticks are most likely to be found and practicing preventive measures to avoid tick bites allows you to enjoy outdoor activities while minimizing the risk of tick-borne diseases such as Lyme disease.

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Date Last Reviewed: March 18, 2025

Editorial Review: Andrea Cohen, Editorial Director, Baldwin Publishing, Inc. Contact Editor

Medical Review: Perry Pitkow, MD

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