Tick Season in Indiana: What to Know to Stay Safe Outdoors
March 29, 2026
Tick season in Indiana is no small concern — and it’s arriving earlier and lasting longer than many Hoosiers expect. Whether you’re hiking a state forest trail, gardening in your backyard, or walking your dog through a neighborhood park, ticks can be waiting in the grass and leaf litter for a passing host.
Understanding when ticks are most active, which species you’re likely to encounter, and how to respond if you find one attached to your skin can make a real difference for your health and your family’s. This guide walks you through everything you need to know about tick season in Indiana — from peak activity windows to safe removal and reporting.
Key Insight: Multiple factors are fueling tick population growth in the Midwest, including warmer year-round temperatures, habitat fragmentation, and growing populations of preferred hosts such as mice and deer.
When Is Tick Season in Indiana
While ticks can be active year-round, spring marks the start of peak tick season, when they’re most prevalent. The best way to prevent tick bites is to avoid certain habitats during the peak of tick season, which in Indiana is usually from early April into July.
Ticks are active in the Hoosier state, and according to state health officials, ticks will be active from now through late fall. That means your window of caution spans roughly eight months of the year.
Different tick species follow different seasonal patterns. Both nymphs and adults can feed on humans and are capable of transmitting disease. In Indiana, nymphs are most active during spring and summer, and adults are most active during the late summer and fall. In general, late spring to late summer is nymph season for the blacklegged tick. As adult blacklegged ticks can survive even in zero degrees and become active when it’s just above freezing and after a snow thaw, tick preventive measures are needed year-round.
Important Note: “Cases of tick-borne disease tend to peak in July,” according to Jennifer Brown, D.V.M., M.P.H., state public health veterinarian at the Indiana State Department of Health (ISDH). Plan your most intensive precautions around midsummer.
Hoosiers should take precautions to prevent tick bites from early spring to late fall, when ticks are most active. If you spend time outdoors — whether for hunting, hiking, or simply enjoying your yard — staying alert throughout this extended season is key.
Types of Ticks Found in Indiana
Approximately 15 species of ticks have been documented in Indiana, including four species of hard ticks that are of significance to public health. More than 15 tick species can be found in Indiana; however, only three species present a health risk to humans. Here’s a closer look at the ones you’re most likely to encounter.
American Dog Tick (Dermacentor variabilis)
The American dog tick is found throughout the eastern U.S. and occurs in all 92 Indiana counties, where it can be very abundant in certain habitats some years. Adults appear in April, reach peak numbers in June, and are seldom seen after early July. They feed on a wide range of mammals, including deer, other wild animals, livestock, pets, and humans.
The American dog tick is the most common tick found on humans and dogs in the state. It can be found in every county in Indiana, which is partly what makes it the most encountered tick — though it is the least likely to bite humans and transmit disease.
Blacklegged Tick / Deer Tick (Ixodes scapularis)
The smallest species of the Indiana ticks, the blacklegged tick (also known as Ixodes scapularis or the “deer” tick) is the primary carrier of Lyme disease. Blacklegged ticks are most active in the spring and summer; however, adults pose a risk any time the temperature is above freezing.
It can be found in moist woodlands with thick leaf litter. Nymphs feed primarily on small animals, but also feed on humans and pets, and are most abundant from late spring into early summer. Because of its very small size, the blacklegged tick is easy to overlook on your skin or clothing.
Lone Star Tick (Amblyomma americanum)
The lone star tick occurs across the southeastern and south-central U.S. and is most common in southern Indiana, though it is found throughout the state, most commonly in moist woodlands. Adult females are characterized by a pearly-white spot at the tip of the scutum and by long mouthparts.
All developmental stages of the lone star tick feed readily on humans. Larvae, which are sometimes referred to as “seed ticks” or “turkey ticks,” appear in spring and again in fall. The lone star tick has also been linked to alpha-gal syndrome, an allergic reaction that occurs in people after eating red meat.
Emerging Species: Gulf Coast and Asian Longhorn Ticks
Recently, two more hard tick species have been found in multiple southern Indiana counties — the Gulf coast tick and the Asian longhorn tick. The Asian longhorn tick is primarily a threat to livestock like cattle. According to the IDOH, these ticks can carry pathogens like the Heartland and Powassan viruses and Rocky Mountain spotted fever, yet there is no evidence that they have transmitted these pathogens to people in the U.S. at this time.
| Tick Species | Peak Activity | Most Common Location | Primary Disease Risk |
|---|---|---|---|
| American Dog Tick | April – early July | All 92 Indiana counties | Rocky Mountain Spotted Fever, Tularemia |
| Blacklegged (Deer) Tick | Spring–Summer (nymphs); Year-round (adults) | Moist woodlands, leaf litter | Lyme disease, Anaplasmosis, Babesiosis |
| Lone Star Tick | Late March – Summer; Fall | Southern Indiana, moist woodlands | Ehrlichiosis, Alpha-gal syndrome, STARI |
| Asian Longhorn Tick | Emerging species | Southern Indiana | Primarily livestock threat; monitoring ongoing |
Tick-Borne Diseases in Indiana
At least 20 different disease-causing bacteria, viruses, and parasites are known to be transmitted from ticks to people. Depending on the disease, patients can experience symptoms that range from mild infections to chronic illness or death.
In addition to ehrlichiosis, Hoosiers are at risk for several other potentially severe tick-borne diseases. While Lyme disease is the most common tick-borne disease in Indiana, Hoosiers are also at risk for a group of diseases that includes Rocky Mountain Spotted Fever.
Lyme Disease
Lyme disease is the most commonly reported tick-borne illness in Indiana and the nation, yet it’s estimated that most cases go undiagnosed. There is consensus among entomologists that overall tick populations are increasing throughout the state, new hard tick species are emerging, and Lyme-carrying blacklegged ticks are populating across all counties.
When somebody gets bitten by a tick, they don’t immediately get Lyme disease. The tick really has to have a full blood meal before the spirochetes are pushed into the human — an eight to 12-hour period. So there’s time to remove that tick before contracting Lyme disease or ehrlichiosis. A classic early sign is a bullseye rash around the bite site. You can learn more about tick-borne viral diseases and how they compare to bacterial infections like Lyme.
Rocky Mountain Spotted Fever (RMSF)
The American dog tick is found throughout the state and is capable of transmitting a group of diseases called the spotted fever rickettsioses (SFRs), with the most famous being Rocky Mountain spotted fever. Hoosiers are at risk for tick-borne illnesses in every part of the state — not just Lyme disease. Rocky Mountain Spotted Fever, for example, can be fatal if it’s not treated in the first few days.
Ehrlichiosis
The Indiana Department of Health has documented deaths in Indiana blamed on ehrlichiosis, a tick-borne illness. The risk for ehrlichiosis is highest in southern Indiana, but disease-carrying ticks have been found throughout the state. Symptoms typically include fever, headache, muscle aches, and fatigue appearing one to two weeks after a bite.
Other Tick-Borne Diseases
The IDOH website states that other tick-borne diseases that have occurred in Indiana include Anaplasmosis, Babesiosis, Ehrlichiosis, Spotted Fever Rickettsiosis, and Tularemia. Hoosiers are also at risk for alpha-gal syndrome, a condition caused by tick bites that can trigger an allergic reaction to red meat.
Pro Tip: Symptoms of tick-borne disease can include a rash near the bite site and flu-like illness, including headache, muscle or joint pain, and fever. Don’t wait to see a doctor if these symptoms appear after outdoor activity.
Understanding how ticks reproduce can also help you understand why populations can surge so quickly and why prevention is so important throughout the season.
High-Risk Areas and Habitats in Indiana
The Indiana Department of Health says the risk of tick-borne illnesses exists in all parts of the state. That said, certain environments and regions carry a higher concentration of tick activity.
Geographic Risk Zones
The risk for Lyme disease is highest in northwest Indiana, and the risk for ehrlichiosis is highest in southern Indiana, but disease-carrying ticks have been found throughout the state. A deer migration over the last 5–10 years west from Wisconsin, Illinois, and into northern Indiana has been a significant factor in the spread of Lyme disease.
Ticks have been getting more attention from residents and public health officials in Indiana because their presence in the state appears to be growing — along with reports of tick-borne illnesses. The important thing for Hoosiers to recognize is that ticks are present where people live, work, and play.
High-Risk Habitats
Ticks live in grassy, brushy, or wooded areas, or even on animals. Spending time outside walking your dog, camping, gardening, or hunting could bring you into close contact with ticks. Many people get ticks in their own yard or neighborhood.
- Hardwood forests with thick leaf litter — prime habitat for blacklegged ticks
- Tall grass and brush — where American dog ticks and lone star ticks quest for hosts
- Moist woodlands in southern Indiana — highest concentration of lone star ticks
- Suburban backyards and neighborhood parks — increasingly common tick encounter zones
- Trail edges and field borders — transition zones where ticks are especially dense
Adult ticks typically latch on about knee level as hosts pass by. Hosts make contact with vegetation along pathways that ticks have staked out as high-traffic areas, waiting in a position called “questing” — holding onto vegetation with their back legs and stretching out their front legs to grab a passing host.
Common Mistake: Many people assume ticks only live deep in the woods. In reality, many people get ticks in their own yard or neighborhood. Always check yourself after any outdoor activity, even close to home.
If you enjoy outdoor pursuits like pheasant hunting or dove hunting in Indiana, you’re frequently moving through the brushy, grassy habitats where ticks are most active — so extra vigilance is warranted.
How to Protect Yourself, Children and Pets During Tick Season in Indiana
Prevention is your most powerful tool against tick-borne illness. A combination of protective clothing, repellents, and post-outdoor checks significantly reduces your risk. Treated or tick-repellent clothing is not just for avid hikers, backpackers, or campers, but for anyone who is in or around a possible tick habitat — such as runners, cyclists, golfers, gardeners, landscapers, and children.
Protecting Yourself and Children
- Wear protective clothing. Wear long sleeves and pants if possible; tuck pant legs into socks and wear light-colored clothing.
- Use EPA-registered repellents. Wear EPA-registered insect repellent that contains DEET, picaridin, IR3535, or oil of lemon eucalyptus.
- Treat your clothing with permethrin. Treat clothing and gear with products containing 0.5% permethrin, which can be used to treat boots, clothing, and camping gear and remain protective through several washings.
- Stay on marked trails. Stay in the center of trails when hiking to avoid brushing against tall grass and plants.
- Do a full-body tick check after going outdoors. Once indoors, thoroughly check for ticks on clothing, gear, pets, and skin. Pay special attention to the scalp, behind the ears, underarms, belly button, and behind the knees.
- Shower and dry your clothes. Tumbling clothes in the dryer on high heat for 30 minutes will kill ticks, and showering can help remove any unattached ticks.
Pro Tip: Nymphs being at ground level make children and pets especially susceptible to a bite. When checking children, focus on the scalp, neck, and ankles first — these are the paths nymphs travel upward from the ground.
Protecting Your Pets
When it comes to pets, it can be trickier to manage ticks. Ticks can jump onto an animal, that animal comes into the house, and then the tick may crawl around the furniture. It’s always good to inspect your pet when it comes into the house, particularly around the ears and around the neck, around the shank, and the hindquarters.
- Talk to your veterinarian about tick prevention products appropriate for your dog or cat
- To further reduce the chances that a tick bite will make your dog sick, check your pets for ticks daily.
- Cats are sensitive to chemicals. Do not apply any tick prevention products to cats without asking your veterinarian.
- Check dogs around the tail, ears, eyelids, under the collar, under the front legs, between the back legs, and between the toes
For more detailed guidance on keeping your dog safe, visit our guide on preventing tick-borne diseases in dogs. You can also learn about natural predators that eat ticks and how they can help reduce tick populations in your yard.
What to Do If You Find a Tick in Indiana
The longer the tick feeds, the greater your risk for infection. Acting quickly and correctly is essential. Here’s the step-by-step approach recommended by Indiana health officials:
Safe Tick Removal
- Use fine-tipped tweezers. Use fine-tipped tweezers or a tick removal tool to grasp the tick as close to the skin’s surface as possible.
- Pull upward with steady pressure. Pull upward with steady, even pressure. Don’t twist or jerk the tick — this can cause the mouthparts to break off and remain in the skin.
- Clean the area thoroughly. After removing the tick, thoroughly clean the bite area and your hands with rubbing alcohol or soap and water.
- Dispose of the tick safely. Dispose of a live tick by putting it in alcohol, placing it in a sealed bag or container, wrapping it tightly in tape, or flushing it down the toilet.
- Save the tick if possible. Save the tick for identification — your doctor can determine if it’s a dangerous species. Use scotch tape to stick it to a piece of paper or place it in a sealed bag.
Important Note: Never crush a tick with your fingers. Do not use a hot match, nail polish, or petroleum jelly for tick removal. These methods can cause the tick to release more fluids into the bite, increasing infection risk.
After Removal: Watch for Symptoms
If you have been in areas with high tick activity or have experienced a recent bite, self-monitor for symptoms for up to 30 days. If you experience aches, pains, fatigue, fever or chills, or develop an unexplained rash, follow up with your healthcare provider and inform them of your potential recent exposure.
If you become ill after discovering an attached tick, the health department says you should immediately see a healthcare provider. Prompt diagnosis is key, and most tick-borne illnesses can be treated with antibiotics.
Reporting Tick Bites and Tick-Borne Illness in Indiana
Reporting tick bites and illnesses serves a critical public health function. A 2023 NPR article concluded there is “a big lack of data out there,” and without data and information, doctors can’t make informed decisions for their patients. Reporting and collecting data is complex, and tick surveillance as a means to collect data is a labor-intensive and costly endeavor.
Researchers at Purdue, Indiana University, and Notre Dame are all working to track how ticks and their diseases move across the state of Indiana. Your reporting contributes directly to that effort.
Who to Contact
- Your healthcare provider — Always your first call if you develop symptoms after a tick bite. Anyone who becomes ill after finding an attached tick should see a healthcare provider immediately and alert the provider to the exposure. Most tick-borne diseases can be treated with antibiotics, and prompt diagnosis can help prevent complications.
- Indiana State Department of Health (ISDH) — The IDOH tracks tick-borne disease data statewide. You can access their tick-borne disease resources and data dashboard at in.gov/health.
- Indiana Lyme Connect — A nonprofit organization that provides education and resources for tick bite prevention and Lyme disease awareness across Indiana. Visit Indiana Lyme Connect for patient support and tick identification resources.
- Purdue Extension — Offers tick identification support and educational publications. Their Public Health Entomology program is a trusted resource for Hoosiers dealing with tick concerns.
Tick Identification Resources
As different ticks transmit different diseases, it is important to know what tick you may have encountered. However, because both animals and people may encounter different ticks at different stages, and some are engorged, the tick’s appearance will change — making identification challenging.
If you’re unsure what kind of tick you’ve found, the IU Environmental Resilience Institute provides identification guidance and tick management resources. You can also contact your local county health department for assistance.
Key Insight: Though cases of tick-borne illness are relatively rare in Indiana, reports have grown steadily in the last decade and official records likely underestimate the scope of the problem. Accurate reporting helps close that data gap and improves care for all Hoosiers.
Tick season in Indiana demands attention from early spring through late fall. By knowing when ticks are active, which species to watch for, and how to protect yourself and your family, you can enjoy Indiana’s outdoors without unnecessary risk. Stay prepared, check yourself and your pets after every outdoor outing, and don’t hesitate to seek medical care if symptoms develop after a tick encounter.