Blackhawk first appeared as a
census designated place in the
1990 U.S. census. The census reported that 98.2% of the population lived in households, 0.4% lived in non-institutionalized group quarters, and 1.4% were institutionalized. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. There were 3,395 households, out of which 31.2% had children under the age of 18 living in them. Of all households, 75.8% were married-couple households, 2.8% were
cohabiting-couple households, 13.7% had a female householder with no spouse or partner present, and 7.7% had a male householder with no spouse or partner present. 12.2% of households were made up of individuals, and 7.5% had someone living alone who was 65 years of age or older. The average household size was 2.79. There were 2,882
families (84.9% of all households).
2010 census The
2010 United States census reported that Blackhawk had a population of 9,354. The population density was . The racial makeup of Blackhawk was 6,882 (73.6%)
White, 172 (1.8%)
African American, 15 (0.2%)
Native American, 1,801 (19.3%)
Asian, 8 (0.1%)
Pacific Islander, 75 (0.8%) from
other races, and 401 (4.3%) from two or more races.
Hispanic or
Latino of any race were 464 persons (5.0%). The Census reported that 100% of the population lived in households. There were 3,345 households, out of which 1,241 (37.1%) had children under the age of 18 living in them, 2,661 (79.6%) were
opposite-sex married couples living together, 155 (4.6%) had a female householder with no husband present, 86 (2.6%) had a male householder with no wife present. There were 76 (2.3%)
unmarried opposite-sex partnerships, and 21 (0.6%)
same-sex married couples or partnerships. 355 households (10.6%) were made up of individuals, and 145 (4.3%) had someone living alone who was 65 years of age or older. The average household size was 2.80. There were 2,902
families (86.8% of all households); the average family size was 3.00. The population was spread out, with 2,271 people (24.3%) under the age of 18, 502 people (5.4%) aged 18 to 24, 1,394 people (14.9%) aged 25 to 44, 3,875 people (41.4%) aged 45 to 64, and 1,312 people (14.0%) who were 65 years of age or older. The median age was 48.0 years. For every 100 females, there were 96.3 males. For every 100 females age 18 and over, there were 94.6 males. There were 3,477 housing units at an average density of , of which 3,345 were occupied, of which 3,044 (91.0%) were owner-occupied, and 301 (9.0%) were occupied by renters. The homeowner vacancy rate was 1.3%; the rental vacancy rate was 3.8%. 8,400 people (89.8% of the population) lived in owner-occupied housing units and 954 people (10.2%) lived in rental housing units. ==Education==