Blue Diamond is a census-designated place (CDP) in Clark County, Nevada, United States. The population was 290 at the 2010 census.
Blue Diamond is located at 36°2′50″N 115°24′11″W / 36.04722°N 115.40306°W / 36.04722; -115.40306 (36.047090, -115.403166).
As of the census of 2000, there were 282 people, 118 households, and 77 families residing in the CDP. The population density was 38.3 people per square mile (14.8/km²). There were 125 housing units at an average density of 17.0 per square mile (6.6/km²). The racial makeup of the CDP was 94.33% White, 0.35% Native American, 1.42% Asian, 0.35% Pacific Islander, 0.35% from other races, and 3.19% from two or more races. Hispanic or Latino of any race were 1.42% of the population.
There were 118 households out of which 28.0% had children under the age of 18 living with them, 48.3% were married couples living together, 13.6% had a female householder with no husband present, and 33.9% were non-families. Of all households 25.4% were made up of individuals and 5.9% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.85.
In the CDP, the population was spread out with 19.9% under the age of 18, 6.4% from 18 to 24, 26.6% from 25 to 44, 36.2% from 45 to 64, and 11.0% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 104.3 males. For every 100 females age 18 and over, there were 101.8 males.
The median income for a household in the CDP was $54,091, and the median income for a family was $54,432. Males had a median income of $47,604 versus $47,692 for females. The per capita income for the CDP was $30,479. About 15.9% of families and 7.2% of the population were below the poverty line, including 21.2% of those under the age of eighteen and none of those sixty five or over.