Alto, CA Profile: Facts, Map & Data


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Alto, California - Basic Facts

The Alto Census Designated Place had a population of 730 as of July 1, 2016. Alto ranks in the upper quartile for Population Density and 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 Alto is located at latitude 37.9056 and longitude -122.5187 in Marin County. The formal boundaries for the Alto Census Designated Place (see map below) encompass a land area of 0.13 sq. miles and a water area of 0 sq. miles. Marin County is in the Pacific time zone (GMT -8). The elevation is 16 feet.

The Alto Census Designated Place (GNIS ID: 2582933) 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 Alto Census Designated Place is located within Southeast Marin CCD of Marin County.

Beneath the boundary map are tables with Alto population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Alto: Blithedale.

Neighborhood Data

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Alto Census Designated Place, CA Boundary Map

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Alto, CA Data & Demographics (As of July 1, 2016)


Total Population 730
Population in Households 730
Population in Familes 598
Population in Group Qrtrs 0
Population Density1 5,808
Diversity Index2 37


Total Households 300
Average Household Size 2.43
Family Households 200
Average Family Size 3


Total Housing Units 313 (100%)
Owner Occupied HU 202 (64.5%)
Renter Occupied HU 98 (31.3%)
Vacant Housing Units 13 ( 4.2%)
Median Home Value $1,000,001
Average Home Value $1,076,485


Median Household Income $103,652
Average Household Income $173,990
Per Capita Income $69,249
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.42% 0.6%
Households 0.16% 0.46%
Families 1.7% 0.4%
Median Household Income   3.52%
Per Capita Income   1.8%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Alto, CA - Peer Comparisons by Rank and Percentile

The table below compares Alto to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2016 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 # 1113 27th
Population Density1 # 191 87th
Diversity Index2 # 1244 18th
Median Household Income # 125 92nd
Per Capita Income # 67 96th

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

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