Petty is an unincorporated community and census designated place (CDP) in Lamar County, Texas, United States.
As of the 2020 census, Petty had a population of 140.
The community bears the name of a pioneer citizen.
Petty first appeared as a census designated place in the 2020 U.S. census.
The Chisum Independent School District serves area students.
The Texas Education Code specifies that all of Lamar County is in the service area of Paris Junior College.