Ticks in Texas

Ticks are active in Texas nearly year-round, led by the lone star tick. TickZone scores all 1419 Texas 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 Texas

Tick season in Texas effectively runs year-round: winters rarely stay cold long enough to fully shut ticks down. Lone star ticks ramp up first in early spring, peak from April through July, and their larval "seed tick" swarms hit hardest in late summer. American dog ticks are busiest from spring through midsummer, and adult ticks of every species can still quest on mild winter days.

Generalized for the South, where the season runs earlier and longer than the North.
Life stageJFMAMJJASOND
Lone star tick
Seed ticks (lone star larvae)
American dog tick
Gulf Coast tick
Peak Active
Generalized for the South, where the season runs earlier and longer than the North. 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.

That means prevention never fully comes off in Texas: the safer way to time it is by the day, not the month. The daily score on every town page folds the season, the weather, and local habitat into one number each morning.

Highest-risk towns in Texas (2026)

Texas's highest-risk towns are spread across several counties, led by Titus County. The top 10 towns run 24 to 45 percent forest, ranked at peak season so the list stays stable.

  1. 1Talco Titus CountyModerate at peak
  2. 2Marietta Cass CountyModerate at peak
  3. 3Tira Hopkins CountyModerate at peak
  4. 4Omaha Morris CountyModerate at peak
  5. 5Dennis Parker CountyModerate at peak
  6. 6Harper Gillespie CountyModerate at peak
  7. 7Annona Red River CountyModerate at peak
  8. 8Brazos Country Austin CountyModerate at peak
  9. 9Scottsville Harrison CountyModerate at peak
  10. 10Morgan Bosque CountyModerate at peak

See the riskiest towns in every state →

All Texas towns, by county

Anderson County · 3 towns

Andrews County · 1 towns

Angelina County · 7 towns

Aransas County · 2 towns

Archer County · 6 towns

Armstrong County · 1 towns

Atascosa County · 6 towns

Austin County · 7 towns

Bailey County · 1 towns

Bandera County · 3 towns

Bastrop County · 8 towns

Baylor County · 1 towns

Bee County · 1 towns

Bell County · 12 towns

Bexar County · 30 towns

Blanco County · 3 towns

Bosque County · 8 towns

Bowie County · 10 towns

Brazoria County · 26 towns

Brazos County · 5 towns

Brewster County · 1 towns

Briscoe County · 2 towns

Brooks County · 1 towns

Brown County · 5 towns

Burleson County · 3 towns

Burnet County · 8 towns

Caldwell County · 4 towns

Calhoun County · 3 towns

Callahan County · 4 towns

Cameron County · 24 towns

Camp County · 2 towns

Carson County · 4 towns

Cass County · 9 towns

Castro County · 3 towns

Chambers County · 7 towns

Cherokee County · 9 towns

Childress County · 1 towns

Clay County · 6 towns

Cochran County · 2 towns

Coke County · 2 towns

Coleman County · 3 towns

Collin County · 25 towns

Collingsworth County · 2 towns

Colorado County · 3 towns

Comal County · 5 towns

Comanche County · 3 towns

Concho County · 2 towns

Cooke County · 8 towns

Coryell County · 5 towns

Cottle County · 1 towns

Crane County · 1 towns

Crockett County · 1 towns

Crosby County · 3 towns

Culberson County · 1 towns

Dallam County · 2 towns

Dallas County · 25 towns

Dawson County · 3 towns

Deaf Smith County · 1 towns

Delta County · 2 towns

Denton County · 37 towns

DeWitt County · 3 towns

Dickens County · 2 towns

Dimmit County · 3 towns

Donley County · 3 towns

Duval County · 3 towns

Eastland County · 6 towns

Ector County · 4 towns

Edwards County · 1 towns

El Paso County · 16 towns

Ellis County · 15 towns

Erath County · 2 towns

Falls County · 4 towns

Fannin County · 11 towns

Fayette County · 7 towns

Fisher County · 2 towns

Floyd County · 2 towns

Foard County · 1 towns

Fort Bend County · 25 towns

Franklin County · 1 towns

Freestone County · 5 towns

Frio County · 2 towns

Gaines County · 2 towns

Galveston County · 16 towns

Garza County · 1 towns

Gillespie County · 2 towns

Goliad County · 1 towns

Gonzales County · 4 towns

Gray County · 3 towns

Grayson County · 18 towns

Gregg County · 9 towns

Grimes County · 6 towns

Guadalupe County · 12 towns

Hale County · 6 towns

Hall County · 4 towns

Hamilton County · 2 towns

Hansford County · 2 towns

Hardeman County · 2 towns

Hardin County · 7 towns

Harris County · 37 towns

Harrison County · 5 towns

Hartley County · 1 towns

Haskell County · 5 towns

Hays County · 12 towns

Hemphill County · 1 towns

Henderson County · 19 towns

Hidalgo County · 48 towns

Hill County · 14 towns

Hockley County · 6 towns

Hood County · 9 towns

Hopkins County · 4 towns

Houston County · 5 towns

Howard County · 3 towns

Hudspeth County · 2 towns

Hunt County · 13 towns

Hutchinson County · 4 towns

Irion County · 1 towns

Jack County · 2 towns

Jackson County · 3 towns

Jasper County · 6 towns

Jeff Davis County · 2 towns

Jefferson County · 12 towns

Jim Hogg County · 1 towns

Jim Wells County · 5 towns

Johnson County · 13 towns

Jones County · 5 towns

Karnes County · 4 towns

Kaufman County · 17 towns

Kendall County · 2 towns

Kent County · 1 towns

Kerr County · 3 towns

Kimble County · 1 towns

Kinney County · 3 towns

Kleberg County · 2 towns

Knox County · 4 towns

La Salle County · 2 towns

Lamar County · 8 towns

Lamb County · 6 towns

Lampasas County · 3 towns

Lavaca County · 4 towns

Lee County · 2 towns

Leon County · 8 towns

Liberty County · 11 towns

Limestone County · 6 towns

Lipscomb County · 4 towns

Live Oak County · 2 towns

Llano County · 5 towns

Lubbock County · 8 towns

Lynn County · 4 towns

Madison County · 2 towns

Marion County · 1 towns

Martin County · 1 towns

Mason County · 1 towns

Matagorda County · 4 towns

Maverick County · 7 towns

McCulloch County · 2 towns

McLennan County · 21 towns

Medina County · 5 towns

Menard County · 1 towns

Midland County · 1 towns

Milam County · 5 towns

Mills County · 2 towns

Mitchell County · 3 towns

Montague County · 3 towns

Montgomery County · 18 towns

Moore County · 3 towns

Morris County · 4 towns

Motley County · 2 towns

Nacogdoches County · 5 towns

Navarro County · 17 towns

Newton County · 1 towns

Nolan County · 3 towns

Nueces County · 8 towns

Ochiltree County · 1 towns

Oldham County · 2 towns

Orange County · 10 towns

Palo Pinto County · 5 towns

Panola County · 3 towns

Parker County · 17 towns

Parmer County · 3 towns

Pecos County · 2 towns

Polk County · 6 towns

Potter County · 2 towns

Presidio County · 2 towns

Rains County · 3 towns

Randall County · 6 towns

Reagan County · 1 towns

Real County · 2 towns

Red River County · 5 towns

Reeves County · 3 towns

Refugio County · 4 towns

Roberts County · 1 towns

Robertson County · 4 towns

Rockwall County · 6 towns

Runnels County · 3 towns

Rusk County · 6 towns

Sabine County · 3 towns

San Augustine County · 2 towns

San Jacinto County · 3 towns

San Patricio County · 13 towns

San Saba County · 2 towns

Schleicher County · 1 towns

Scurry County · 1 towns

Shackelford County · 2 towns

Shelby County · 5 towns

Sherman County · 2 towns

Smith County · 11 towns

Somervell County · 1 towns

Starr County · 5 towns

Stephens County · 1 towns

Sterling County · 1 towns

Stonewall County · 1 towns

Sutton County · 1 towns

Swisher County · 3 towns

Tarrant County · 37 towns

Taylor County · 9 towns

Terry County · 3 towns

Throckmorton County · 2 towns

Titus County · 4 towns

Tom Green County · 2 towns

Travis County · 26 towns

Trinity County · 3 towns

Tyler County · 4 towns

Upshur County · 5 towns

Upton County · 2 towns

Uvalde County · 3 towns

Val Verde County · 4 towns

Van Zandt County · 8 towns

Victoria County · 4 towns

Walker County · 3 towns

Waller County · 6 towns

Ward County · 7 towns

Washington County · 2 towns

Webb County · 3 towns

Wharton County · 3 towns

Wheeler County · 3 towns

Wichita County · 6 towns

Wilbarger County · 1 towns

Willacy County · 4 towns

Williamson County · 18 towns

Wilson County · 4 towns

Winkler County · 2 towns

Wise County · 12 towns

Wood County · 7 towns

Yoakum County · 2 towns

Young County · 3 towns

Zapata County · 3 towns

Zavala County · 2 towns

Texas tick questions

Are there ticks in Texas?
Yes. Texas has ticks in every county, led by the lone star tick, with the American dog tick, Gulf Coast tick, brown dog tick, and deer tick also present. Ticks here stay active nearly year-round, and today 0 of the state's 1419 towns are at moderate or high tick risk on TickZone's daily score.
What types of ticks live in Texas?
Texas has five human-biting ticks: the lone star tick (established statewide, the state's most common human-biting tick and the main cause of alpha-gal syndrome), the Gulf Coast tick (established), the American dog tick, the brown dog tick, and the deer tick (blacklegged tick), which carries Lyme disease but bites people far less often this far south. See the Texas tick identification chart for photos and how to tell them apart.
When does tick season start and end in Texas?
In Texas, ticks are active nearly year-round: the region rarely gets a hard freeze long enough to fully shut them down. The lone star tick ramps up earliest in spring, peaks in midsummer, and its larval "seed tick" swarms hit hardest in late summer. Adult ticks can still quest on mild winter days.
When is flea and tick season?
Flea and tick season generally runs from early spring through late fall, peaking in the warm summer months. In Texas, start prevention for pets and people in March and keep it up through November, since ticks can bite on any mild day.
Which tick carries Lyme disease in Texas?
The deer tick, also called the blacklegged tick, is the tick that spreads Lyme disease, but it is a minor factor in Texas. The lone star tick does not carry Lyme, but its bite causes alpha-gal syndrome, and it bites people far more often here than the deer tick does.
Does Texas have lone star ticks that cause alpha-gal syndrome?
Yes. The lone star tick is established across Texas and is the tick most responsible for human bites in the state. Its bite can trigger alpha-gal syndrome, a delayed allergy to red meat and other mammal products, along with ehrlichiosis and STARI.