|Black Diamond, Florida|
|— CDP —|
Location in Citrus County and the state of Florida
|- Total||3.8 sq mi (9.8 km2)|
|- Land||3.8 sq mi (9.8 km2)|
|- Water||0 sq mi (0 km2)|
|Elevation||56 ft (17 m)|
|- Density||182.6/sq mi (70.8/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|- Summer (DST)||EDT (UTC-4)|
|GNIS feature ID||1853236|
Black Diamond is located at .(28.911262, -82.492608)
According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.8 km²), all of it land.
As of the census of 2000, there were 694 people, 248 households, and 212 families residing in the CDP. The population density was 183.6 people per square mile (70.9/km²). There were 374 housing units at an average density of 98.9/sq mi (38.2/km²). The racial makeup of the CDP was 94.09% White, 0.72% African American, 4.61% Asian, and 0.58% from two or more races. Hispanic or Latino of any race were 1.01% of the population.
There were 248 households out of which 15.3% had children under the age of 18 living with them, 84.7% were married couples living together, 0.8% had a female householder with no husband present, and 14.5% were non-families. 11.7% of all households were made up of individuals and 4.0% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.39.
In the CDP the population was spread out with 9.7% under the age of 18, 1.4% from 18 to 24, 10.7% from 25 to 44, 39.0% from 45 to 64, and 39.2% who were 65 years of age or older. The median age was 62 years. For every 100 females there were 81.2 males. For every 100 females age 18 and over, there were 81.7 males.
The median income for a household in the CDP was $107,771, and the median income for a family was $105,987. Males had a median income of $0 versus $32,500 for females. The per capita income for the CDP was $53,621. About 5.7% of families and 3.7% of the population were below the poverty line, including none of those under the age of eighteen or sixty-five or over.