The 2010 United States Census reported that Mount Hebron had a population of 95. The population density was 133.2 people per square mile. The racial makeup of Mount Hebron was 73 White, 0 African American, 1 Native American, 0 Asian, 0 Pacific Islander, 18 from other races, and 3 from two or more races. Hispanic or Latino of any race were 41 persons. The Census reported that 93 people lived in households, 2 lived in non-institutionalized group quarters, and 0 were institutionalized. There were 32 households, out of which 11 had children under the age of 18 living in them, 16 were opposite-sex married couplesliving together, 3 had a female householder with no husband present, 1 had a male householder with no wife present. There were 0 unmarried opposite-sex partnerships, and 0 same-sex married couples or partnerships. 11 households were made up of individuals and 8 had someone living alone who was 65 years of age or older. The average household size was 2.91. There were 20 families ; the average family size was 3.30. The population was spread out with 17 people under the age of 18, 8 people aged 18 to 24, 29 people aged 25 to 44, 25 people aged 45 to 64, and 16 people who were 65 years of age or older. The median age was 42.3 years. For every 100 females, there were 131.7 males. For every 100 females age 18 and over, there were 151.6 males. There were 43 housing units at an average density of 60.3 per square mile, of which 24 were owner-occupied, and 8 were occupied by renters. The homeowner vacancy rate was 0%; the rental vacancy rate was 27.3%. 52 people lived in owner-occupied housing units and 41 people lived in rental housing units.
2000
As of the census of 2000, there were 92 people, 35 households, and 26 families residing in the CDP. The population density was 128.0 people per square mile. There were 43 housing units at an average density of 59.8 per square mile. The racial makeup of the CDP was 73.91% White, 2.17% Native American, 21.74% from other races, and 2.17% from two or more races. Hispanic or Latino of any race were 28.26% of the population. There were 35 households out of which 34.3% had children under the age of 18 living with them, 57.1% were married couples living together, 11.4% had a female householder with no husband present, and 25.7% were non-families. 25.7% of all households were made up of individuals and 5.7% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.04. In the CDP, the population was spread out with 26.1% under the age of 18, 9.8% from 18 to 24, 34.8% from 25 to 44, 18.5% from 45 to 64, and 10.9% who were 65 years of age or older. The median age was 32 years. For every 100 females, there were 100.0 males. For every 100 females age 18 and over, there were 119.4 males. The median income for a household in the CDP was $22,188, and the median income for a family was $25,625. Males had a median income of $31,250 versus $11,250 for females. The per capita income for the CDP was $16,556. There were 10.5% of families and 22.5% of the population living below the poverty line, including 18.2% of under eighteens and 33.3% of those over 64.
Politics
In the state legislature Mount Hebron is in, and. Federally, Mount Hebron is in.
