4 Types of Ticks in Illinois
4 types of ticks have a verified observation record in Illinois. The most frequently recorded are American Dog Tick, Lone Star Tick and Eastern Black-legged Tick. Here is the full list, ranked by how often each is reported on iNaturalist.
Quick Answer
4 types of ticks have a verified observation record in Illinois. The most frequently recorded are American Dog Tick, Lone Star Tick and Eastern Black-legged Tick. Here is the full list, ranked by how often each is reported on iNaturalist.
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Real sighting data, source iNaturalist
2,504 verified observations on iNaturalist of tick have been recorded in Illinois, most often in May, April, June.
When tick are recorded in Illinois
Verified species, source iNaturalist
4 types of ticks recorded in Illinois
4 tick species have a verified observation record in Illinois, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
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Plus 1 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations.
The American Dog Tick (Dermacentor variabilis) is the most commonly recorded, with 1,458 verified observations, about 63% of all ticks reported in Illinois. If you spot a tick here, it is statistically most likely to be this one.