The Comanche are a Native American ethnic group whose range (the Comancheria) consisted of present-day Eastern New Mexico, Southern Colorado, Southern Kansas, all of Oklahoma, and most of Northern and Southern Texas. There may once have been as many as 20,000 Comanches. Today, the Comanche Nation consists of approximately 10,000 members, about half of whom live in Oklahoma (centered at Lawton), and the remainder are concentrated in Texas, California, and New Mexico. The Comanche speak an Uto-Aztecan language, sometimes classified as a Shoshone dialect.