Randall County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 140,753. Its county seat is Canyon. The county was created in 1876 and later organized in 1889. It is named for Horace Randal, a Confederate brigadier general killed at the Battle of Jenkins Ferry. The reason the county name differs from his is because the bill creating the county misspelled Randal's name.

Potter County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 118,525. Its county seat is Amarillo. The county was created in 1876 and organized in 1887. It is named for Robert Potter, a politician, signer of the Texas Declaration of Independence, and the Texas Secretary of the Navy. Potter County is included in the Amarillo metropolitan area.