The curve-billed thrasher is commonly found throughout the southwestern United States from Arizona's Sonoran Desert across New Mexico to west Texas, southeastern Colorado and southwestern Kansas as well as most of Mexico from the Sonoran-Chihuahuan Deserts and south through the Mexican Plateau into Central Tamaulipas, inland to Oaxaca, and on the coast of Sonora to Nayarit.
Vagrants have been found in bordering states of its range, as far north as North Dakota, Alberta and Manitoba and as far east as Florida.
Palmeri types have been spotted in Florida, while curvirostre have been found in Iowa on several occasions.
Other than previously noted exceptions, the curve-billed is essentially non-vagrant.

In comparison with other desert thrashers, the curve-billed is not as particular with habitats and can be found from ground level up to 3,000 m (9,800 ft).
It generally resides where cholla and saguaro cacti, ocotillo, mesquites, palo verde, and creosote bushes are prevalent.
It can also be located along woodland edges, piñon, dry desert bushland and areas within its region where cacti are present.
 If there is an adequate amount of desert vegetation near human habitation, along with feeders, the curve-billed can adapt within these environments.
The curve-billed thrasher is commonly found throughout the southwestern United States from Arizona's Sonoran Desert across New Mexico to west Texas, southeastern Colorado and southwestern Kansas as well as most of Mexico from the Sonoran-Chihuahuan Deserts and south through the Mexican Plateau into Central Tamaulipas, inland to Oaxaca, and on the coast of Sonora to Nayarit. Vagrants have been found in bordering states of its range, as far north as North Dakota, Alberta and Manitoba and as far east as Florida. Palmeri types have been spotted in Florida, while curvirostre have been found in Iowa on several occasions. Other than previously noted exceptions, the curve-billed is essentially non-vagrant.
In comparison with other desert thrashers, the curve-billed is not as particular with habitats and can be found from ground level up to 3,000 m (9,800 ft). It generally resides where cholla and saguaro cacti, ocotillo, mesquites, palo verde, and creosote bushes are prevalent. It can also be located along woodland edges, piñon, dry desert bushland and areas within its region where cacti are present.  If there is an adequate amount of desert vegetation near human habitation, along with feeders, the curve-billed can adapt within these environments.
Curve-billed thrasher