Sierra Blanca first appeared as a
census designated place in the
2000 U.S. census.
2020 census As of the
2020 United States census, there were 315 people, 114 households, and 84 families residing in the CDP.
2010 census As of the
2010 census, 553 people, 172 households, and 126 families were residing in the CDP. The
population density was 116.0 people/sq mi (50.6/km2). The 227 housing units averaged 55.8/sq mi (21.5/km2). The racial makeup of the CDP was 83.91%
White, 3.44%
Native American, 3.25%
Black, 1.45%
Asian, 7.96% from other races, and 3.56% from
two or more races.
Latinos of any race were 72.61% of the population. Of the 172 households, 40.2% had children under 18 living with them, 45.72% were married couples living together, 13.0% had a female householder with no husband present, and 31.0% were not families. About 28.3% of all households were made up of individuals, and 11.4% had someone living alone who was 65 or older. The average household size was 2.63, and the average family size was 3.31. In the CDP, theage distribution was 29.8% under 18, 11.8% from 18 to 24, 30.8% from 25 to 44, 18.4% from 45 to 64, and 9.2% who were 65 or older. The median age was 34.3 years. For every 100 females, there were 96.0 males. For every 100 females age 18 and over, there were 101.1 males. The median income for a household in the CDP was $32,464. The
per capita income for the CDP was $14,682. About 19.6% of families and 22.5% of the population were below the
poverty line, including 28.3% of those under age 18 and 32.6% of those age 65 or over. ==Education==