The 2010 United States Census reported that Humboldt Hill had a population of 3,414. The population density was 819.1 people per square mile. The racial makeup of Humboldt Hill was 2,853 White, 41 African American, 119 Native American, 102 Asian, 2 Pacific Islander, 129 from other races, and 168 from two or more races. Hispanic or Latino of any race were 298 persons. The Census reported that 3,187 people lived in households, 145 lived in non-institutionalized group quarters, and 82 were institutionalized. There were 1,325 households, out of which 360 had children under the age of 18 living in them, 653 were opposite-sex married couplesliving together, 143 had a female householder with no husband present, 66 had a male householder with no wife present. There were 112 unmarried opposite-sex partnerships, and 17 same-sex married couples or partnerships. 326 households were made up of individuals, and 151 had someone living alone who was 65 years of age or older. The average household size was 2.41. There were 862 families ; the average family size was 2.87. The population was spread out, with 646 people under the age of 18, 374 people aged 18 to 24, 773 people aged 25 to 44, 1,024 people aged 45 to 64, and 597 people who were 65 years of age or older. The median age was 42.2 years. For every 100 females, there were 94.6 males. For every 100 females age 18 and over, there were 95.1 males. There were 1,396 housing units at an average density of 334.9 per square mile, of which 1,325 were occupied, of which 1,016 were owner-occupied, and 309 were occupied by renters. The homeowner vacancy rate was 1.4%; the rental vacancy rate was 3.4%. 2,434 people lived in owner-occupied housing units and 753 people lived in rental housing units.
2000
As of the census of 2000, there were 3,246 people, 1,209 households, and 851 families residing in the CDP. The population density was 778.3 people per square mile. There were 1,269 housing units at an average density of 304.3 per square mile. The racial makeup of the CDP was 87.68% White, 0.89% Black or African American, 3.27% Native American, 1.85% Asian, 0.31% Pacific Islander, 2.00% from other races, and 4.00% from two or more races. 6.07% of the population were Hispanic or Latino of any race. There were 1,209 households, out of which 29.9% had children under the age of 18 living with them, 53.9% were married couples living together, 11.9% had a female householder with no husband present, and 29.6% were non-families. 22.9% of all households were made up of individuals, and 10.3% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 2.93. In the CDP, the population was spread out, with 22.9% under the age of 18, 10.9% from 18 to 24, 24.2% from 25 to 44, 25.5% from 45 to 64, and 16.5% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 97.8 males. For every 100 females age 18 and over, there were 92.4 males. The median income for a household in the CDP was $37,121, and the median income for a family was $42,826. Males had a median income of $35,500 versus $28,304 for females. The per capita income for the CDP was $16,222. About 7.5% of families and 11.5% of the population were below the poverty line, including 13.8% of those under age 18 and 4.2% of those age 65 or over.
Politics
In the state legislature, Humboldt Hill is in, and. Federally, Humboldt Hill is in.
