County	Date Formed	Parent County	County Seat
Coke	1889	Tom Green	Robert Lee
Concho	1858	Bexar	Paint Rock
Crockett	1875	Bexar	Ozona
Glasscock	1887	Tom Green	Garden City
Irion	1889	Tom Green	Mertzon
Kimble	1858	Bexar	Junction
Menard	1858	Bexar	Menard
Reagan	1903	Tom Green	Big lake
Runnels	1858	Bexar, Travis	Ballinger
Schleicher	1887	Bexar	Eldorado
Sterling	1891	Tom Green	Sterling City
Sutton	1887	Bexar	Sonora
Tom Green	1874	Bexar	San Angelo