Skip to content
LoneStarMap

Lone Star ticks in Maryland

Yes. Lone Star ticks live in Maryland, and it's an alpha-gal hotspot.

Maryland is within the established Lone Star tick range and among the states where CDC found the highest rates of suspected alpha-gal cases.

Peak season
April – SeptemberSource: University of Maryland Extension (opens in a new tab)
What to do
Use repellent and do tick checks. If you ever get hives or stomach pain hours after eating red meat, mention tick bites to a clinician.
Where ticks wait
  • Wooded areas and shaded trail edges
  • Tall grass, brush, and overgrown fields
  • Leaf litter and ground cover
  • Shaded borders where lawns meet woods
Who should take extra care

Hikers and campers, hunters, pet owners, gardeners and yard workers, golfers, and parents of young children.

If you find one on you

Take it out with fine-tipped tweezers, pulling straight up, and write down the date. The step-by-step guide tells you what to watch for, and for how long.

What to do after a biteIdentify the tick

How to avoid bites in Maryland

  • Use EPA-registered repellent (DEET, picaridin, or oil of lemon eucalyptus)
  • Treat clothing and gear with permethrin
  • Wear long sleeves and tuck pants into socks in brushy areas
  • Stay on cleared trails and avoid tall grass and leaf litter
  • Shower within two hours of coming indoors
  • Do daily tick checks on people and pets during the season
The full prevention guide

Find your county

Each of Maryland’s 24 counties and cities has its own page with CDC’s record for it, a map of the counties around it, and season and prevention notes.

Browse all 24 counties
Allegany CountyAnne Arundel CountyBaltimore CountyCity of BaltimoreCalvert CountyCaroline CountyCarroll CountyCecil CountyCharles CountyDorchester CountyFrederick CountyGarrett CountyHarford CountyHoward CountyKent CountyMontgomery CountyPrince George's CountyQueen Anne's CountySomerset CountySt. Mary's CountyTalbot CountyWashington CountyWicomico CountyWorcester County

Loading counties and cities…

Fig. 1. Maryland’s 24 counties and cities, by CDC’s 2025 record. Click one to open its page.
  • Established18
  • Reported4
  • No records2

Common questions

Are there Lone Star ticks in Maryland?

Yes. Maryland is in the Lone Star tick's range, and CDC found some of the highest rates of suspected alpha-gal cases here. CDC lists Lone Star ticks as established in 18 of Maryland's 23 counties. Residents and outdoor workers should take prevention seriously.

When is tick season in Maryland?

Lone Star ticks in Maryland are most active from April to September. They can still bite outside those months on warm days.

Can I get alpha-gal syndrome from a tick bite in Maryland?

It's possible. Alpha-gal syndrome is a delayed allergy to red meat linked to Lone Star tick bites, and those ticks live in Maryland. Most bites do not cause it. If you get hives, swelling or stomach pain 2 to 6 hours after eating red meat, see a doctor.

What should I do after a tick bite in Maryland?

Take the tick out with fine-tipped tweezers, pulling straight up. Wash the bite, keep the tick or a photo of it, and write down the date. Watch for symptoms for the next few weeks. See a doctor if you get a rash, a fever, feel very tired, or react to food.

How do I get a tick identified in Maryland?

Seal the tick in a bag with a damp paper towel and take a clear photo. Your state health department or a university extension program may be able to name it or test it.

Where this comes from9 sources · Last reviewed June 2, 2026Show
  1. 1.
    Where Ticks Live (opens in a new tab) · CDC

    The Lone Star tick is widely distributed in the Northeast, South, and Midwest U.S.

  2. 2.
    Lone Star Tick Surveillance (opens in a new tab) · CDC

    County-level established vs. reported records. 'Established' = 6+ ticks or multiple life stages collected in 12 months.

  3. 3.
    Alpha-gal Syndrome (opens in a new tab) · CDC

    What alpha-gal syndrome is, symptoms, and its association with tick bites.

  4. 4.
    Geographic Distribution of Suspected Alpha-gal Syndrome Cases — U.S., 2017–2022 (MMWR) (opens in a new tab) · CDC / MMWR

    Highest suspected-AGS prevalence across a contiguous southern, midwestern, and mid-Atlantic region; most cases align with the established Lone Star tick range.

  5. 5.
    Current and Future Distribution of the Lone Star Tick in North America (opens in a new tab) · Raghavan et al., PLOS ONE (2019)

    Ecological niche modeling of Amblyomma americanum range and projected northward expansion.

  6. 6.
    Preventing Tick Bites (opens in a new tab) · CDC
  7. 7.
    Find the Repellent That Is Right for You (opens in a new tab) · EPA

    Search tool for EPA-registered repellents (DEET, picaridin, oil of lemon eucalyptus).

  8. 8.
    Lone Star Tick Surveillance Map Data, 2025 (county status) (opens in a new tab) · CDC

    Every county's status: Established (6 or more ticks, or more than one life stage, found in a year), Reported (fewer), or No records. Linked from CDC's Lone Star Tick Surveillance page.

  9. 9.
    Ticks in Maryland (opens in a new tab) · University of Maryland Extension

    Lone star tick adults April to late August; nymphs May to early August; larvae July to late September.

Educational information only, not medical advice. If someone is struggling to breathe or having a severe reaction, call 911. Read the disclaimer.

Printed from lonestarmap.com/states/maryland. Check the page for the latest version.