Ticks live in every Michigan county, especially in wooded areas, brush, tall grass, and places where wildlife travel. The species you are most likely to encounter include the blacklegged tick, American dog tick, lone star tick, brown dog tick, and woodchuck tick.
Learn which ticks are in Michigan, when they are active, and how to remove them promptly to reduce illness risks for yourself and your pets.
Blacklegged ticks, also called deer ticks, are the primary Michigan tick linked to Lyme disease. Other ticks can transmit or carry different pathogens, so knowing the species can help after a bite.
The Michigan Department of Health and Human Services tick data tracks resident-submitted reports by county, year, and tick type.
Michigan Ticks You’re Most Likely to Encounter
Michigan has several tick species that bite people, dogs, and wildlife. The blacklegged tick deserves special attention because of Lyme disease.
Other species differ in appearance, habitat, seasonal activity, and health risks.
Blacklegged Tick (Deer Tick)
The blacklegged tick, or deer tick, is Ixodes scapularis. It usually appears dark brown to black, with females showing a darker body and a reddish-orange area behind the mouthparts.
Adults are about the size of a sesame seed, while nymphs can be as small as a poppy seed. Blacklegged ticks feed on mice, birds, deer, and other wildlife.
They can transmit Lyme disease, babesiosis, anaplasmosis, and Powassan encephalitis. Nymphs are especially important because their small size makes them easy to overlook.
American Dog Tick
The American dog tick, Dermacentor variabilis, is also called the wood tick. It commonly has a brown body with ornate whitish or gray markings, and you can find it throughout Michigan.
Adults are more noticeable than nymphs because they are larger and often attach to dogs or people walking through grass and brush. This species can transmit Rocky Mountain spotted fever and tularemia.
You should still remove an attached American dog tick quickly.
Lone Star Tick
The lone star tick, Amblyomma americanum, is established in Michigan and may be found in brushy, wooded, or wildlife-rich areas. Adult females often have a distinctive white spot on the back, while males may show pale markings around the edge of the body.
Lone star ticks can bite aggressively. They are associated with ehrlichiosis, tularemia, and alpha-gal syndrome, a delayed allergic reaction to mammalian meat that can develop after a bite.
Brown Dog Tick
The brown dog tick, Rhipicephalus sanguineus, is reddish brown and lacks the ornate markings of the American dog tick. It is strongly associated with dogs, kennels, homes, and indoor environments.
Brown dog ticks can complete their life cycle indoors and may spread canine ehrlichiosis and canine babesiosis. A household infestation requires prompt veterinary and pest-control attention.
Woodchuck Tick
The woodchuck tick, Ixodes cookei, is also called the groundhog tick. It feeds primarily on woodchucks and other small mammals, though it can occasionally attach to people or pets.
Its appearance can overlap with other dark ticks, so you may need a close photograph or expert identification. The blacklegged tick is the main Michigan Lyme disease vector, not the woodchuck tick.
Tick Identification Clues and Look-Alikes
You can identify ticks by size, markings, mouthparts, location, and degree of engorgement. A clear close-up photograph can help, and a tick identification service or public health department can assist when species affects medical decisions.
Size, Color, and Markings
Use a ruler or familiar object for scale, and photograph the tick from above before disposing of it. Blacklegged ticks are small and dark, American dog ticks are larger with pale ornate markings, and female lone star ticks commonly have a single white spot.
A swollen tick may look very different from an unfed specimen. For photo comparisons, a tick identification chart with size and markings can help you narrow down the possibilities.
Do not delay medical care while trying to name a tick.
Nymphs, Adults, and Engorged Ticks
Nymph deer ticks are roughly poppy-seed sized and can be difficult to spot on skin. Adult ticks are easier to see, especially after feeding, when the abdomen expands and its original markings become less distinct.
Check your scalp, waist, armpits, groin, behind your knees, and around your ears. On children and pets, inspect areas where fur or clothing can hide a small tick.
Species That May Be Emerging or Reported Nearby
Michigan has reports of multiple tick species beyond the five you are most likely to encounter. The Asian longhorned tick, Haemaphysalis longicornis, has expanded in parts of the United States, so unusual specimens may need confirmation.
If a tick looks unfamiliar, keep it in a sealed container or take detailed photographs. Record where and when you found it, then ask a healthcare provider, veterinarian, or appropriate public health agency about identification.
Disease Risks Linked to Michigan Tick Species
Different ticks carry different pathogens, and a bite does not automatically mean you will become sick. Your risk depends on the species, local pathogen activity, attachment time, and symptoms that develop afterward.
Lyme Disease and Blacklegged Ticks
Blacklegged ticks transmit Lyme disease in Michigan. Early symptoms may include an expanding rash, fever, chills, headache, fatigue, muscle aches, or joint pain.
Not everyone develops the classic bull’s-eye appearance. Nymph deer ticks peak in late spring and summer, while adult ticks commonly create another exposure period in fall.
Michigan’s five most common ticks guide identifies the species most likely to bite people in the state.
Other Tick-Borne Infections
Depending on the tick and exposure, Michigan residents may face risks from babesiosis, anaplasmosis, Powassan encephalitis, Rocky Mountain spotted fever, tularemia, ehrlichiosis, or alpha-gal syndrome. Symptoms can include fever, headache, weakness, gastrointestinal upset, rash, confusion, or breathing difficulty.
Contact a healthcare professional if you develop symptoms after a tick bite. Tell them when and where you were bitten, how long the tick may have been attached, and whether you kept a photograph or specimen.
Pet Health and Indoor Brown Dog Tick Concerns
Ticks can make dogs sick through canine babesiosis, canine ehrlichiosis, and other infections. Watch for fever, tiredness, appetite changes, pale gums, swollen joints, unusual bruising, or dark urine.
Contact your veterinarian if these signs appear. Brown dog ticks may hide in cracks, bedding, kennels, and baseboards.
Use a veterinarian-recommended preventive consistently, inspect your dog after outdoor activity, and address household infestations promptly.
When Ticks Are Active and How to Respond to a Bite
Michigan ticks are active whenever conditions allow, not only during hot summer weather. You can reduce exposure with protective clothing, repellents, routine checks, and quick tick removal.
Tick Season in Michigan
Tick season in Michigan generally runs from early spring through late fall, roughly March through November, when the ground is not frozen. American dog ticks are often most active from spring into summer.
Blacklegged tick nymphs peak around late May through July and adults become more active in October and November. A mild winter day can still bring tick activity.
Do not rely on the calendar alone, especially when temperatures rise above freezing.
Preventing Tick Bites Outdoors and at Home
Wear light-colored clothing, tuck pants into socks, and stay in the center of maintained trails. Apply an EPA-registered repellent containing DEET to exposed skin as directed.
Treat clothing or gear with permethrin according to the product label. After outdoor activity, check your body, children, pets, clothing, and gear.
Showering soon after coming indoors can help remove unattached ticks. Putting dry clothing in a hot dryer can kill ticks that may be hiding in fabric.
Safe Tick Removal and When to Seek Care
Use clean, fine-tipped tweezers to grasp the tick as close to your skin as possible. Pull upward with steady pressure.
Clean the bite area and your hands with soap and water or an appropriate antiseptic.
Avoid twisting, burning, coating the tick with petroleum jelly, or crushing it against your skin.
Contact a healthcare provider if you cannot remove the entire tick. Seek medical advice if the tick was attached for an uncertain length of time or if you develop a spreading rash, fever, facial weakness, severe headache, or other concerning symptoms.
