Parts of the county were given to Placer County in 1852.

Placer County has one of the highest growth rates in the country.

Gold Run was a former settlement in Placer County, California.

Lost Camp is a former settlement in Placer County, California.

Placer County took its name from the Spanish word for sand or gravel deposits containing gold.

Placer County has been an important mining area not only for gold, but also other minerals and granite.

By 1850, the town's population had grown to about 1500 people, and in 1851, Auburn was chosen as the seat of Placer County.

Chicago Park is a former settlement in Placer County, California.

Red Point is a former settlement in Placer County, California.

The largest population of the frog will be given protection on a 48-acre stretch of land in Placer County.