Map of Alta CDP, California

Alta (Spanish for “Upper”) is a small unincorporated community and census-designated place (CDP) in Placer County, California, United States, about 30 miles (48 km) northeast of Auburn. The village is located off Interstate 80 and along the historical First transcontinental railroad. The ZIP code is 95701 and the area code 530. One of the few buildings other than private residences is the Alta-Dutch Flat Grammar School serving kindergarten through eighth grade students. The high school that serves Alta is named Colfax High School. Colfax High School is 11 miles southwest in the incorporated town of Colfax. The population of Alta was 615 at the 2020 census.

A historical California place once named Alta was located in San Diego County near the present-day La Mesa–El Cajon boundary. This historical place was along the San Diego and Arizona Eastern Railway, now the San Diego Trolley Orange Line, at its Murray Drive undercrossing in La Mesa. The community was named after the Spanish word meaning “upper” or “high”.

Alta CDP overview:
Name:	Alta CDP
LSAD Code:	57
LSAD Description:	CDP (suffix)
State:	California
County:	Placer County
Elevation:	3,743 ft (1,141 m)
Total Area:	2.39 sq mi (6.19 km²)
Land Area:	2.38 sq mi (6.17 km²)
Water Area:	0.01 sq mi (0.02 km²) 0.28%
Total Population:	615
Population Density:	257.97/sq mi (99.62/km²)
ZIP code:	95701
Area code:	530
FIPS code:	0601276
GNISfeature ID:	2628704

Online Interactive Map

Alta online map. Source: Basemap layers from Google Map, Open Street Map (OSM), Arcgisonline, Wmflabs. Boundary Data from Database of Global Administrative Areas.

Alta location map. Where is Alta CDP?

Alta location on the U.S. Map. Where is Alta CDP. — Alta location on the U.S. Map.

Alta location on the California map. Where is Alta CDP. — Location of Alta in California.

Alta Road Map

Alta city Satellite Map

Geography

According to the United States Census Bureau, the CDP covers an area of 2.4 square miles (6.2 km), 99.72% of it land, and 0.28% of it water.

Climate

Alta has a hot-summer Mediterranean climate (Köppen climate classification Csa) that is characterized by cool, wet winters and hot, dry summers (Köppen climate classification Csa).