 Miller Ranch is located in the far north of the county ten miles from Valentine in adjoining Jeff Davis County.As of the 2010 United States Census, 7,818 people resided in the county.About 85.9% were White, 1.0% Asian, 0.7% Native American, 0.6% Black or African American, 9.9% of some other race, and 1.9% of two or more races; 83.4% were Hispanic or Latino (of any race).