Alta, CA Profile: Facts, Map & Data


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Alta, California - Basic Facts

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The Alta Census Designated Place had a population of 640 as of July 1, 2017. Alta ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Alta is located at latitude 39.2157 and longitude -120.7985 in Placer County. The formal boundaries for the Alta Census Designated Place (see map below) encompass a land area of 2.38 sq. miles and a water area of 0.01 sq. miles. Placer County is in the Pacific time zone (GMT -8). The elevation is 3,606 feet.

The Alta Census Designated Place (GNIS ID: 2628704) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Alta Census Designated Place is located within Colfax-Monumental Ridge CCD of Placer County.

Beneath the boundary map are tables with Alta population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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Alta Census Designated Place, CA Boundary Map

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Boundary Maps: Colfax-Monumental Ridge CCD | Placer County | California Counties

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Alta, CA Data & Demographics (As of July 1, 2017)


Total Population 640
Daytime Population: Workers 122
Daytime Population: Residents 363
Total Daytime Population (TDP) 485
Ratio TDP/Total Population1 0.76
Population in Households 629
Population in Familes 502
Population in Group Qrtrs 11
Population Density2 269
Diversity Index3 22


Median Household Income $60,658
Average Household Income $81,841
Per Capita Income $35,222


Total Housing Units 332 (100%)
Owner Occupied HU 201 (60.5%)
Renter Occupied HU 55 (16.6%)
Vacant Housing Units 76 (22.9%)
Median Home Value $379,348
Average Home Value $431,343


Total Households 256
Average Household Size 2.46
Family Households 168
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.66% 1.01%
Households 0.78% 1.0%
Families -0.32% 0.93%
Median Household Income   2.98%
Per Capita Income   2.87%

Alta, CA - Peer Comparisons by Rank and Percentile

The table below compares Alta to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1145 25th
Population Density # 1075 29th
Diversity Index # 1470 3rd
Median Household Income # 647 57th
Per Capita Income # 499 67th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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