Diamond Springs (formerly, Diamond Spring and Diamond) is a census-designated place (CDP) in El Dorado County, California, United States. It is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area. The population was 4,888 at the 2000 census. The town is registered as California Historical Landmark #487. It lies at an elevation of 1791 feet (546 m).
This town, settled in 1848, derived its name from its crystal clear springs. Among the richest spots in this vicinity, its diggings produced a 25-pound nugget, one of the largest ever found in El Dorado County. Its most thriving period was in 1851 and, through its lumber, lime production, and agriculture, Diamond Springs has retained some of its early importance.
A post office was established at Diamond Spring in 1853; the name was changed to Diamond Springs in 1950.
According to the United States Census Bureau, the CDP has a total area of 6.0 square miles (15.5 km²), of which, 5.9 square miles (15.4 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.67%) is water.
As of the census of 2000, there were 4,888 people, 1,984 households, and 1,327 families residing in the CDP. The population density was 823.0 people per square mile (317.7/km²). There were 2,057 housing units at an average density of 346.3/sq mi (133.7/km²). The racial makeup of the CDP was 90.16% White, 0.10% Black or African American, 2.23% Native American, 0.49% Asian, 0.06% Pacific Islander, 4.48% from other races, and 2.48% from two or more races. 8.51% of the population were Hispanic or Latino of any race.
There were 1,984 households out of which 28.4% had children under the age of 18 living with them, 52.9% were married couples living together, 10.9% had a female householder with no husband present, and 33.1% were non-families. 27.0% of all households were made up of individuals and 16.8% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.98.
In the CDP the population was spread out with 24.3% under the age of 18, 6.1% from 18 to 24, 25.0% from 25 to 44, 23.0% from 45 to 64, and 21.6% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 88.7 males. For every 100 females age 18 and over, there were 86.3 males.
The median income for a household in the CDP was $36,449, and the median income for a family was $40,833. Males had a median income of $35,844 versus $26,500 for females. The per capita income for the CDP was $19,466. About 8.4% of families and 10.7% of the population were below the poverty line, including 13.0% of those under age 18 and 10.6% of those age 65 or over.
In the state legislature Diamond Springs is located in the 1st Senate District, represented by Republican Dave Cox, and in the 4th Assembly District, represented by Republican Ted Gaines. Federally, Diamond Springs is located in California's 4th congressional district, which has a Cook PVI of R +11 and is represented by Republican John Doolittle.