Comanche peoples are Native Americans who lived in an area called the "Comancheria". This is where Eastern New Mexico, Southern Colorado, Southern Kansas, all of Oklahoma and most of Northern and Southern Texas are today. There once were as many as 20,000 Comanches. Today the Comanche Nation has 10,000 members, most in Oklahoma (centered at Lawton) and the rest in Texas, California, and New Mexico. The Comanche speak a language of their own, the Comanche language that is related to other Native American ones, called "Uto-Aztecan language family".