Ticks in Ohio are more than a seasonal nuisance — Lyme disease cases in Ohio have risen more than 700% from 2007 to 2018, according to data from the Ohio Department of Health and the CDC. If you spend time outdoors hiking, gardening, or simply letting your kids play in the yard, understanding tick season in Ohio could make a real difference for your health.
This guide walks you through when ticks are most active in Ohio, which species to watch for, the diseases they can carry, where you’re most likely to encounter them, and — most importantly — how to protect yourself, your children, and your pets all season long.
Key Insight: Twenty years ago, the American dog tick was the only tick in Ohio of medical importance to humans. Today, there are five ticks of concern, including the American dog tick, the blacklegged tick, the Lone Star tick, and most recently the Asian longhorned tick and the Gulf Coast tick, both first confirmed in Ohio in 2020.
When Is Tick Season in Ohio
Tick season in Ohio runs from March to November, with peak activity usually between April and September each year. That’s a wide window that covers most of Ohio’s outdoor recreation calendar, from early spring hikes to fall hunting trips.
Ticks are most commonly active when temperatures rise above and remain consistently above 40°F. In Ohio, tick season usually begins in April and continues through September, though ticks can bite at other times of the year when present. Warm spells in late winter or early fall can bring them out earlier or keep them active longer than expected.
Not all tick species follow the same schedule. Although the blacklegged tick can be active nearly all year round in Ohio, most encounters with the various types of ticks will occur in spring through mid-summer, and then again in the fall. The blacklegged tick — the primary carrier of Lyme disease — is especially active during cooler months when other species go dormant.
In Ohio, cases of Lyme disease are reported every month of the year, but people are most at risk when ticks are most active in late spring through mid-summer. June and July are the months most Ohioans are actually bitten by Lyme-infected blacklegged ticks.
Pro Tip: Ohio’s warming temperatures are letting ticks stay active year-round in some areas. Mild winters can allow species like the blacklegged tick to survive and even stay active during previously too-cold months. Don’t assume the season is over just because the calendar says fall.
Types of Ticks Found in Ohio
Ohio is home to about a dozen tick species, but three — the American dog tick, the blacklegged tick, and the lone star tick — are most commonly encountered by people and pets. Two newer arrivals — the Asian longhorned tick and the Gulf Coast tick — have also been confirmed in the state in recent years. Here’s what you need to know about each.
American Dog Tick (Dermacentor variabilis)
The American dog tick is the most common tick species in Ohio and can be found throughout the state. It is a vector for Rocky Mountain Spotted Fever and prefers habitats with tall grass next to wooded areas. Dog ticks are most active during spring to mid-summer.
Adult females have a distinctive cream-colored shield just behind their heads. Males are smaller with grayish-silver mottled markings. Dog ticks are often found in overgrown lots and along weedy roadsides, paths, and hiking trails.
Blacklegged Tick / Deer Tick (Ixodes scapularis)
Lyme disease is transmitted by the blacklegged tick and is the most prevalent tick-borne disease of humans in Ohio and the United States. This species has been expanding its range across the state in recent years.
Blacklegged ticks are tiny and very hard to see — often no bigger than a poppy seed in their nymph stage — and they can carry the bacteria that cause Lyme disease. Humans are most likely to be infected by immature blacklegged ticks called nymphs. Their small size makes them easy to miss during a body check, which is why thorough tick checks after outdoor activity are so important. You can learn more about how ticks reproduce and develop through their life stages.
Lone Star Tick (Amblyomma americanum)
Lone Star ticks are considered aggressive human biters, and all stages of the tick can be found throughout the warmer months. They are most likely to be found in shaded areas on the tips of tall grass or other low-growing vegetation. The females have a white dot on their back, making them easy to identify.
While not as common as dog ticks, Lone Star ticks are becoming more abundant in the Midwest and carry Ehrlichiosis and STARI borreliosis, as well as other diseases. In some cases, in some people, Lone Star ticks can also cause an allergy to red meat after the person is bitten.
Asian Longhorned Tick and Gulf Coast Tick
Both the Asian longhorned tick and the Gulf Coast tick were first confirmed in Ohio in 2020. Global climate change and tick-host range expansion are driving their spread. While still less commonly encountered than the three primary species, their presence is a reminder that Ohio’s tick landscape continues to evolve.
Important Note: Different species of ticks are responsible for transmitting different diseases, so it is important to be able to identify a tick if you are bitten. Keep in mind that not all ticks carry disease, and handling tick removal properly can decrease the chance of disease transmission if a tick is a carrier.
Tick-Borne Diseases in Ohio
With the rising tick population comes the risk of contracting tick-borne illnesses such as anaplasmosis, babesiosis, Rocky Mountain spotted fever, and Lyme disease. The Ohio Department of Health has seen an increase in tick-borne diseases reported in the past decade, with Lyme disease and Rocky Mountain spotted fever being the most common. Other tick-borne diseases such as anaplasmosis, babesiosis, and ehrlichiosis are also on the rise in Ohio.
| Disease | Primary Tick Vector in Ohio | Key Symptoms |
|---|---|---|
| Lyme Disease | Blacklegged tick | Bull’s-eye rash, fever, fatigue, joint pain |
| Rocky Mountain Spotted Fever | American dog tick | High fever, headache, spotted rash |
| Anaplasmosis | Blacklegged tick | Fever, chills, muscle aches, headache |
| Babesiosis | Blacklegged tick | Fever, fatigue, sweats, hemolytic anemia |
| Ehrlichiosis | Lone Star tick | Fever, headache, muscle pain, nausea |
Lyme Disease
Lyme disease is the most common tick-borne illness in Ohio, with reported cases more than doubling between 2022 and 2023 according to the Ohio Department of Health. Symptoms may include a bull’s-eye rash developing at the site of a tick bite within two to 32 days. This rash is diagnostic for Lyme disease. However, up to 40 percent of infected humans do not develop a ring-rash.
Fever, headache, fatigue, or joint pain may also be symptoms of Lyme disease. Immediate antibiotic therapy reduces the risk of neurological, arthritic, or cardiac complications developing days to years later. You can also read more about tick-borne encephalitis, a serious viral disease spread by ticks in various parts of the world.
Rocky Mountain Spotted Fever (RMSF)
Rocky Mountain spotted fever is caused by bacteria carried primarily by the American dog tick. Ohio reports approximately 10 cases of RMSF per year. The majority of RMSF cases occur in the southeastern United States. Most Ohio RMSF cases occur between April and August when dog tick populations are high.
Anaplasmosis and Babesiosis
Blacklegged ticks can carry diseases such as Powassan virus, Babesiosis, and Anaplasmosis. These diseases share overlapping symptoms — chills, fever, and fatigue — making them difficult to self-diagnose. Tick-borne diseases can result in mild symptoms treatable at home to severe infections requiring hospitalization. Although easily treated with antibiotics, these diseases can be difficult for physicians to diagnose. Early recognition and treatment decreases the risk of serious complications.
Common Mistake: Assuming you’re safe because you didn’t see a rash. Up to 40 percent of people infected with Lyme disease do not develop the characteristic ring-rash. If you’ve been bitten and develop any flu-like symptoms, contact your healthcare provider.
High-Risk Areas and Habitats in Ohio
Ohio provides suitable habitat for ticks. Ticks thrive in areas with a combination of wooded and grassy environments, as well as regions with a diversity of wildlife that serve as hosts for ticks. Knowing where ticks concentrate most heavily helps you make smarter choices about where you walk, play, and recreate.
Wooded and Brushy Areas
High-risk areas for Lyme disease include wooded, bushy, and grassy areas, as well as areas with leaf litter and weeds. Blacklegged ticks are becoming more common due to accelerated community growth into their habitat: wooded areas with ample brush and moisture, which are common in eastern and southeastern Ohio along the Pennsylvania and West Virginia borders.
If you enjoy goose hunting in Ohio or dove hunting in fields and marshes, be aware that these outdoor environments are prime tick territory — especially where tall grass meets tree lines.
Grassy and Transitional Zones
Your own backyard or a favorite park can be a source of ticks, especially if it borders wooded areas or has tall grass. Tall grass, leaf litter, and wooded or brushy areas are prime habitats for ticks. The transition zone — where a mowed lawn meets an unmowed field or wooded edge — is where ticks tend to concentrate in highest numbers.
In spring and summer, adult ticks wait on vegetation for a host to pass by. When a person or animal brushes against the vegetation, the tick will cling to fur or clothing and crawl upward, looking for a place to attach and begin feeding. Contrary to popular belief, ticks don’t fall out of trees — they climb up toward your head.
Urban and Suburban Settings
The property around many homes can provide equally sufficient habitats for ticks, especially those near wooded areas or areas with tall grass. Anyone who spends time outdoors is at potential risk of contracting a tick-borne disease. Leaf piles in the fall, garden borders, and unmaintained fence lines are common spots where ticks gather close to home.
Hiking, camping, hunting, and gardening increase the risk of being bitten by infected ticks. Even a short walk in a local park warrants a tick check when you get home.
How to Protect Yourself, Children and Pets During Tick Season in Ohio
Preventing tick bites is the most effective way to avoid tick-borne illness. While the risk of encountering ticks in Ohio is high, and the number of ticks that are carrying disease is high, there are things people can do to keep themselves safe. A layered approach — combining clothing choices, repellents, habitat management, and daily tick checks — gives you the strongest protection.
Protecting Yourself and Children
- Wear the right clothing: Wear light-colored clothes, including a long-sleeved shirt tucked into your pants and long pants tucked into your socks or boots. Light colors make ticks easier to spot before they attach.
- Use EPA-registered repellents: Use insect repellents registered by the U.S. Environmental Protection Agency (EPA) labeled for use against ticks on exposed skin for protection that lasts several hours. Parents should apply repellent to their children, avoiding their hands, eyes, and mouth.
- Treat your gear with permethrin: Treat clothing and gear, such as boots, pants, socks, and tents with products containing 0.5 percent permethrin. This provides an additional layer of protection beyond skin-applied repellents.
- Stick to trails: Walk in the center of trails to minimize contact with vegetation where ticks wait for passing hosts.
- Shower and check after being outside: Shower within two hours to help find and remove ticks. Conduct a full-body tick check using a mirror for hard-to-see areas. Pay close attention to areas around your head, ears, scalp, groin area, waist, and under the arms.
- Dry your clothes on high heat: Tumble dry clothes on high heat for 10 minutes to kill ticks.
Protecting Pets
Lyme disease is very common in dogs. Dogs can get very sick from it, and they can also bring ticks into your house — which can then bite you. Protecting your pets is just as important as protecting yourself. For detailed guidance on keeping your dog safe, see these tips for preventing tick-borne diseases in your dog.
- Use veterinarian-recommended preventatives: Monthly oral preventatives prescribed by veterinarians can kill ticks after they bite. Topical treatments or tick collars provide an extra layer of protection by repelling ticks before they bite.
- Check pets after every outing: Check pets frequently for ticks, including in and around ears, around eyelids, under their collar, under legs, between toes, and around their tail.
- Keep your yard maintained: Habitat management is essential for controlling tick populations. Keep your yard mowed, and do not allow brush or leaf litter to accumulate. Remove brush, tall weeds, and grass to eliminate the habitat of rodents and other small mammals, which serve as hosts for ticks.
- Consider Lyme vaccination for dogs: Lyme disease vaccination of dogs in Ohio should be considered as infection risk increases. Talk to your vet about whether it’s appropriate for your pet.
It’s also worth knowing which animals naturally eat ticks — encouraging these species around your property can help reduce local tick populations over time.
Pro Tip: To reduce tick activity around your home, trim back tall grass, clear out leaf litter, and create a barrier between your lawn and any surrounding wooded areas. Landscaping changes like these make your yard less appealing to ticks and their hosts.
What to Do If You Find a Tick in Ohio
Finding a tick on yourself, a child, or a pet is understandably alarming — but staying calm and acting quickly is the right approach. Those who’ve been bitten by a tick, even if the tick is infected, will not necessarily get sick. It takes a long time for a tick to be on you and feeding before it can infect you.
How to Remove a Tick Safely
- Use fine-tipped tweezers to grasp the tick as close to the skin’s surface as possible.
- Pull away from your skin with steady, even pressure. Don’t twist or jerk the tick.
- Clean the bite area and your hands with rubbing alcohol, iodine scrub, or soap and water.
- Save the tick in a sealed bag or jar for identification — your healthcare provider may want to know the species.
- Watch for symptoms such as fever, lethargy, and swelling over the next few weeks.
Important Note: Do not use petroleum jelly, a hot match, nail polish, or any other folk remedies to remove a tick. These methods do not work. Covering the tick with substances and waiting for it to “back out” can actually increase the chance of disease transmission.
After Tick Removal: What to Watch For
Early symptoms appearing 3 to 30 days after a bite include fever, chills, headache, feeling tired, muscle aches, joint aches, or swollen glands. About 70 to 80 percent of infected people get a rash, but not everyone does. It starts at the bite site, usually 3 to 30 days later. It can grow up to 12 inches across. Sometimes it looks like a “bull’s-eye,” but it can also be a solid red patch.
See your healthcare provider immediately if you have been bitten by a tick and experience any of the symptoms described here. When diagnosed early, Lyme disease is easily treated with antibiotics like doxycycline. Most people completely recover after being treated.
The CDC also offers a helpful online resource — the “Tick Bite Bot” — that walks you through tick removal steps and helps you determine if a call to your doctor is recommended.
Reporting Tick Bites and Tick-Borne Illness in Ohio
Reporting tick bites and suspected tick-borne illnesses helps Ohio’s public health system track disease trends, identify high-risk areas, and allocate resources where they’re needed most. You don’t have to navigate this alone — there are several channels available to you.
The Ohio Department of Health
The Ohio Department of Health’s Zoonotic Disease Program tracks and responds to tick-borne diseases, collecting and analyzing data to detect trends and investigate reported cases. If you or a family member is diagnosed with a tick-borne illness, your healthcare provider is required to report confirmed cases to the state. You can also contact the ODH directly through their Ticks in Ohio information page.
Your Local Health Department
Many Ohio county health departments actively monitor tick populations and offer tick identification services. Some county health departments, like Lorain County Public Health, send blacklegged ticks found through active surveillance “flagging” to the Ohio Department of Health’s Zoonotic Disease Program to be tested for the bacteria responsible for causing Lyme disease.
After removing a live tick from yourself, your child, or your pet, some local health departments can help identify the species. You can submit tick photos digitally for identification, or bring the tick in a sealed bag or container to your local public health office.
Tick Species Identification
The C. Wayne Ellett Plant and Pest Diagnostic Clinic (PPDC) at The Ohio State University can identify tick species. Some private labs conduct disease testing of ticks, but there is no state agency in Ohio that offers this service at this time. If you want a tick tested for pathogens, ask your healthcare provider about private lab options.
When to Contact Your Doctor
If symptoms start within several weeks after a tick bite, see your doctor. Tell them about the recent bite, when it happened, and where you likely got the tick. Early reporting and treatment are the best tools you have for a full recovery.
Key Insight: Ticks take advantage of every opportunity to move to new spaces. Every year going forward has the potential to be a bad tick year, and you should go into each tick season thinking about how you can keep you and your family tick-safe.
Tick season in Ohio is long, and the risks are real — but they’re also very manageable. Staying informed, checking yourself after every outdoor outing, and taking simple precautions with clothing and repellents puts you in a strong position. Whether you’re heading out for a walk in a state park, spending a weekend camping, or just working in your backyard, a little awareness goes a long way toward keeping your whole family safe all season.