"Placer" is probably a contraction of the words plaza de oro (the place of gold) and in Spanish means "a place near a river where gold is found." The county derived its name from the numerous places where the method of extracting gold from the earth, called placer mining, was practiced.
As of the census² of 2000, there were 248,399 people, 93,382 households, and 67,701 families residing in the county. The population density was 177 people per square mile (68/km²). There were 107,302 housing units at an average density of 76 per square mile (30/km²). The racial makeup of the county was 88.59% White, 0.82% Black or African American, 0.89% Native American, 2.95% Asian, 0.16% Pacific Islander, 3.39% from other races, and 3.21% from two or more races. 9.67% of the population were Hispanic or Latino of any race. 89.7% spoke English and 6.0% Spanish as their first language.
There were 93,382 households out of which 35.30% had children under the age of 18 living with them, 59.40% were married couples living together, 9.20% had a female householder with no husband present, and 27.50% were non-families. 21.30% of all households were made up of individuals and 8.10% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.06.
In the county the population was spread out with 26.50% under the age of 18, 6.90% from 18 to 24, 29.00% from 25 to 44, 24.50% from 45 to 64, and 13.10% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 96.40 males. For every 100 females age 18 and over, there were 93.90 males.
The median income for a household in the county was $57,535, and the median income for a family was $65,858. Males had a median income of $50,410 versus $33,763 for females. The per capita income for the county was $27,963. About 3.90% of families and 5.80% of the population were below the poverty line, including 6.30% of those under age 18 and 3.80% of those age 65 or over.
Major Highways in Placer County
Interstate 80
State Route 28
State Route 49
State Route 65
State Route 89
State Route 174
State Route 267
Towns and Cities in Placer County
Auburn
Colfax
Lincoln
Loomis
Rocklin
Roseville
Adjacent Counties
El Dorado County, California - south
Sacramento County, California - southwest
Sutter County, California - west
Yuba County, California - northwest
Nevada County, California - north
Washoe County, Nevada - east
Carson City, Nevada - east
Douglas County, Nevada - southeast
