TickZone

Ticks in Wyoming

Ticks are active in Wyoming whenever the ground is not frozen, led by the Lyme-carrying deer tick. TickZone scores all 113 Wyoming towns every morning, so risk stays local: pick your town for today's number, a 7-day outlook, and what's driving it.

Tick season in Wyoming

Tick season in Wyoming peaks in spring, the opposite of the Northeast. The Rocky Mountain wood tick, the main human biter across the interior West, quests from March into early summer and largely disappears as the high country dries out. On the Pacific slope the western blacklegged tick (the local Lyme vector) also peaks in spring, and in California's chaparral the Pacific Coast tick holds a late-summer window.

Generalized for the West, where risk peaks in spring and summer drought suppresses it.
Life stageJFMAMJJASOND
Rocky Mountain wood tick
Western blacklegged tick
Pacific Coast tick
American dog tick
Peak Active
Generalized for the West, where risk peaks in spring and summer drought suppresses it. Activity windows by life stage from TickEncounter (Univ. of Rhode Island) and the Northeast Regional Center for Excellence in Vector-Borne Diseases. Any warm spell can wake ticks earlier than the calendar suggests.

Summer heat is a low point out West, not a high one. The daily score on every town page folds the season, the weather, and local habitat into one number each morning, so it is the safer way to time hikes and yard work than the calendar alone.

Highest-risk towns in Wyoming (2026)

Wyoming's highest-risk towns are spread across several counties, led by Teton County. The top 10 towns run 0 to 69 percent forest, ranked at peak season so the list stays stable.

  1. 1Lost Springs Converse CountyHigh at peak
  2. 2Van Tassell Niobrara CountyHigh at peak
  3. 3Wilson Teton CountyModerate at peak
  4. 4Hoback Teton CountyModerate at peak
  5. 5Moose Wilson Road Teton CountyModerate at peak
  6. 6Star Valley Ranch Lincoln CountyModerate at peak
  7. 7Pine Haven Crook CountyModerate at peak
  8. 8Elk Mountain Carbon CountyModerate at peak
  9. 9Hartville Platte CountyModerate at peak
  10. 10Rafter J Ranch Teton CountyModerate at peak

See the riskiest towns in every state →

All Wyoming towns, by county

Albany County · 2 towns

Big Horn County · 9 towns

Campbell County · 3 towns

Carbon County · 10 towns

Converse County · 4 towns

Crook County · 4 towns

Fremont County · 9 towns

Goshen County · 5 towns

Hot Springs County · 3 towns

Johnson County · 2 towns

Laramie County · 8 towns

Lincoln County · 9 towns

Natrona County · 6 towns

Niobrara County · 3 towns

Park County · 3 towns

Platte County · 5 towns

Sheridan County · 4 towns

Sublette County · 3 towns

Sweetwater County · 7 towns

Teton County · 6 towns

Uinta County · 4 towns

Washakie County · 2 towns

Weston County · 2 towns

Wyoming tick questions

Are there ticks in Wyoming?
Yes. Wyoming has ticks, led by the Rocky Mountain wood tick across the interior and, on the Pacific slope, the western blacklegged tick. Lyme disease is uncommon here; the wood tick's spring bite (Rocky Mountain spotted fever, Colorado tick fever) is the real concern. Today 4 of the state's 113 towns are at moderate or high tick risk on TickZone's daily score.
What types of ticks live in Wyoming?
Wyoming's human-biting ticks are the Rocky Mountain wood tick (Rocky Mountain spotted fever, Colorado tick fever, tularemia), the western blacklegged tick (the Pacific-slope Lyme vector), the Pacific Coast tick, and the American dog tick. See the Wyoming tick identification chart for photos and how to tell them apart.
When does tick season start and end in Wyoming?
In Wyoming, tick risk peaks in spring, the opposite of the Northeast. The Rocky Mountain wood tick quests from March into early summer, then summer heat and drought suppress activity. On the Pacific slope the western blacklegged tick also peaks in spring.
When is flea and tick season?
Flea and tick season in Wyoming centers on spring and early summer, when the Rocky Mountain wood tick and western blacklegged tick are most active, easing as the land dries in high summer. Start pet prevention by March.
Which tick carries Lyme disease in Wyoming?
On the Pacific slope, the western blacklegged tick (Ixodes pacificus) is the Lyme vector, but Lyme is uncommon across Wyoming. The Rocky Mountain wood tick, the main biter inland, does not carry Lyme; it carries Rocky Mountain spotted fever and Colorado tick fever.