Community-powered tick tracking
Know before you go.
Tick Check is a free community map where hikers, parents, and pet owners report tick sightings in real time — so you know what's out there before you head outdoors.
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Total sightings
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Last 7 days
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Species logged
Peak tick season is here (May–August). Wear long sleeves, use repellent, and check yourself after every outdoor activity.
Ticks near you
Find the closest and most recent sightings in your area.
Sightings across the US
Browse recent reports or jump to a specific state.
Tick species guide
The most common tick species found in the United States and the diseases they carry.
Black-legged tick (Deer tick)
Ixodes scapularis
Most common carrier of Lyme disease. About the size of a sesame seed.
Range: Northeast, Midwest & Southeast US
Disease risk:
American dog tick
Dermacentor variabilis
Prefers open areas with little tree cover. Active April–August.
Range: East of Rocky Mountains, Pacific Coast
Disease risk:
Brown dog tick
Rhipicephalus sanguineus
Unique among ticks — can complete its lifecycle indoors. Primary host is dogs.
Range: Worldwide, throughout US
Disease risk:
Lone star tick
Amblyomma americanum
Females have a distinctive white spot on their back. Very aggressive biters.
Range: Southeast & Eastern US
Disease risk:
Rocky Mountain wood tick
Dermacentor andersoni
Found in shrubland and along trails at elevations of 4,000–10,500 ft.
Range: Rocky Mountain states
Disease risk:
Gulf Coast tick
Amblyomma maculatum
Found in open grasslands and coastal habitats. Range is expanding northward.
Range: Coastal areas of Southeast US, expanding inland
Disease risk: