Emissions testing by county
Texas tests vehicle emissions in 17 counties, plus Bexar County from November 1, 2026. Pick a county for its fees, station listings, tax office and neighbors. Not sure which county your vehicle is registered in? Use the county checker.
Dallas-Fort Worth program area
Station fee up to $18.50
- Collin County
- Testing since
- May 1, 2002
- Vehicles (FY 2025)
- 956,767
- Station listings
- 8
- Dallas County
- Testing since
- May 1, 2002
- Vehicles (FY 2025)
- 2,119,019
- Station listings
- 10
- Denton County
- Testing since
- May 1, 2002
- Vehicles (FY 2025)
- 819,821
- Station listings
- 2
- Ellis County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 215,506
- Station listings
- 2
- Johnson County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 205,443
- Station listings
- 5
- Kaufman County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 170,855
- Station listings
- 0
- Parker County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 190,757
- Station listings
- 2
- Rockwall County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 117,260
- Station listings
- 1
- Tarrant County
- Testing since
- May 1, 2002
- Vehicles (FY 2025)
- 1,743,345
- Station listings
- 15
Dallas-Fort Worth Program Area: Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, and Tarrant Counties
Houston-Galveston-Brazoria program area
Station fee up to $18.50
- Brazoria County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 361,591
- Station listings
- 2
- Fort Bend County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 712,987
- Station listings
- 3
- Galveston County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 313,275
- Station listings
- 5
- Harris County
- Testing since
- May 1, 2002
- Vehicles (FY 2025)
- 3,552,979
- Station listings
- 39
- Montgomery County
- Testing since
- May 1, 2003
- Vehicles (FY 2025)
- 672,464
- Station listings
- 8
Houston-Galveston-Brazoria Program Area: Brazoria, Fort Bend, Galveston, Harris, and Montgomery Counties
Austin-Round Rock program area
Station fee up to $11.50
- Travis County
- Testing since
- Sep 1, 2005
- Vehicles (FY 2025)
- 1,003,803
- Station listings
- 13
- Williamson County
- Testing since
- Sep 1, 2005
- Vehicles (FY 2025)
- 574,108
- Station listings
- 3
Austin Area: Travis and Williamson Counties
El Paso program area
Station fee up to $11.50
- El Paso County
- Testing since
- Jan 1, 2007
- Vehicles (FY 2025)
- 705,428
- Station listings
- 8
El Paso Area: El Paso County
San Antonio program area
Station fee up to $18.50
- Bexar County
- Testing since
- Nov 1, 2026
- Vehicles (FY 2025)
- 1,773,138
- Station listings
- 6
San Antonio Area: Bexar County (beginning on November 1, 2026)
Counties without emissions testing
No emissions test applies to vehicles registered in these counties, and since January 1, 2025 non-commercial vehicles there need no inspection before registration. More in Texas counties without emissions testing.
236 of Texas’s 254 counties have no emissions test; until November 1, 2026 Bexar County makes 237.
- Anderson
- Andrews
- Angelina
- Aransas
- Archer
- Armstrong
- Atascosa
- Austin
- Bailey
- Bandera
- Bastrop
- Baylor
- Bee
- Bell
- Blanco
- Borden
- Bosque
- Bowie
- Brazos
- Brewster
- Briscoe
- Brooks
- Brown
- Burleson
- Burnet
- Caldwell
- Calhoun
- Callahan
- Cameron
- Camp
- Carson
- Cass
- Castro
- Chambers
- Cherokee
- Childress
- Clay
- Cochran
- Coke
- Coleman
- Collingsworth
- Colorado
- Comal
- Comanche
- Concho
- Cooke
- Coryell
- Cottle
- Crane
- Crockett
- Crosby
- Culberson
- Dallam
- Dawson
- Deaf Smith
- Delta
- DeWitt
- Dickens
- Dimmit
- Donley
- Duval
- Eastland
- Ector
- Edwards
- Erath
- Falls
- Fannin
- Fayette
- Fisher
- Floyd
- Foard
- Franklin
- Freestone
- Frio
- Gaines
- Garza
- Gillespie
- Glasscock
- Goliad
- Gonzales
- Gray
- Grayson
- Gregg
- Grimes
- Guadalupe
- Hale
- Hall
- Hamilton
- Hansford
- Hardeman
- Hardin
- Harrison
- Hartley
- Haskell
- Hays
- Hemphill
- Henderson
- Hidalgo
- Hill
- Hockley
- Hood
- Hopkins
- Houston
- Howard
- Hudspeth
- Hunt
- Hutchinson
- Irion
- Jack
- Jackson
- Jasper
- Jeff Davis
- Jefferson
- Jim Hogg
- Jim Wells
- Jones
- Karnes
- Kendall
- Kenedy
- Kent
- Kerr
- Kimble
- King
- Kinney
- Kleberg
- Knox
- La Salle
- Lamar
- Lamb
- Lampasas
- Lavaca
- Lee
- Leon
- Liberty
- Limestone
- Lipscomb
- Live Oak
- Llano
- Loving
- Lubbock
- Lynn
- Madison
- Marion
- Martin
- Mason
- Matagorda
- Maverick
- McCulloch
- McLennan
- McMullen
- Medina
- Menard
- Midland
- Milam
- Mills
- Mitchell
- Montague
- Moore
- Morris
- Motley
- Nacogdoches
- Navarro
- Newton
- Nolan
- Nueces
- Ochiltree
- Oldham
- Orange
- Palo Pinto
- Panola
- Parmer
- Pecos
- Polk
- Potter
- Presidio
- Rains
- Randall
- Reagan
- Real
- Red River
- Reeves
- Refugio
- Roberts
- Robertson
- Runnels
- Rusk
- Sabine
- San Augustine
- San Jacinto
- San Patricio
- San Saba
- Schleicher
- Scurry
- Shackelford
- Shelby
- Sherman
- Smith
- Somervell
- Starr
- Stephens
- Sterling
- Stonewall
- Sutton
- Swisher
- Taylor
- Terrell
- Terry
- Throckmorton
- Titus
- Tom Green
- Trinity
- Tyler
- Upshur
- Upton
- Uvalde
- Val Verde
- Van Zandt
- Victoria
- Walker
- Waller
- Ward
- Washington
- Webb
- Wharton
- Wheeler
- Wichita
- Wilbarger
- Willacy
- Wilson
- Winkler
- Wise
- Wood
- Yoakum
- Young
- Zapata
- Zavala
County list: U.S. Census Bureau TIGERweb (January 1, 2026 vintage). Program counties: TCEQ.
Sources
- TCEQ, Vehicle Emissions Inspections in Texaspage as published Sep 23, 2026 (archived copy), read Oct 6, 2026
- TxDMV, FY 2025 Vehicles Registered and License Fees by County and Regional Officeread Oct 6, 2026
- U.S. Census Bureau TIGERweb, Texas counties