As of the census in 2000, there were 414 people, 138 households, and 110 families residing in the county. The population density was 0.28 people per square mile (0.11/km2). There were 281 housing units at an average density of 0.19 per square mile (0.07/km2). The racial makeup of the county was 64.49% White, 0.72% Black or African American, 0.72% Native American, 0.48% Asian, 31.88% from other races, and 1.69% from two or more races. 78.99% of the population were Hispanic or Latino of any race.