Where Ticks Live
Preferred Habitats
Black-legged ticks are most commonly found in wooded areas and the edges between forest and open space — called ecotones. They require humid environments where leaf litter provides the moisture they need to survive. They cannot survive in hot, dry, exposed conditions for long.
- Forest edges and trails: The transition zone between woods and lawn is where tick density is highest
- Leaf litter: Decomposing leaves create the moist habitat ticks require to overwinter and survive
- Tall grass and shrubs: Ticks "quest" on vegetation — holding on with back legs and reaching forward to grab a passing host
- Residential yards bordering woods: Suburban and even urban yards near wooded areas can harbor significant tick populations
High-Risk Regions
While cases have been reported in all 50 states, risk is concentrated in:
- Northeast and Mid-Atlantic: Connecticut, Rhode Island, Massachusetts, New York, New Jersey, Pennsylvania, Delaware, Maryland, Virginia, Vermont, New Hampshire, Maine account for the majority of US cases
- Upper Midwest: Wisconsin and Minnesota have the highest Midwest incidence
- Northern California and Pacific Northwest: Ixodes pacificus is the Lyme vector in this region
Your Own Backyard
Many Lyme cases are acquired in residential settings — in backyards, neighborhood parks, and suburban green spaces. Deer, mice, and birds bring infected ticks into yards regularly. Targeted yard management can reduce your family's exposure substantially.
Is Tick Territory Expanding?
Yes. Climate changes, shifting wildlife populations, and increased suburban woodland proximity have contributed to the geographic expansion of black-legged ticks. The range has expanded significantly northward and westward over the past two decades.