Sonoma County CA Information


Sonoma County Subdivisions

Sonoma County CA Data & Demographics (As of July 1, 2015)


Total Population 494,431
Population in Households 483,698
Population in Familes 371,771
Population in Group Qrtrs 10,733
Population Density1 314
Diversity Index2 65


Total Households 190,034
Average Household Size 2.55
Family Households 119,993
Average Family Size 3


Total Housing Units 209,439 (100%)
Owner Occupied HU 111,339 (53.2%)
Renter Occupied HU 78,695 (37.6%)
Vacant Housing Units 19,405 ( 9.3%)
Median Home Value $416,141
Average Home Value $475,695


Median Household Income $61,807
Average Household Income $84,831
Per Capita Income $33,056
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.41% 0.53%
Households 0.43% 0.6%
Families 0.46% 0.63%
Median Household Income   3.56%
Per Capita Income   2.64%
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.


Sonoma County CA - Peer Comparisons by Rank and Percentile

The table below compares Sonoma County to the other 58 counties and county equivalents in California by rank and percentile using July 1, 2015 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 # 17 72nd
Population Density1 # 17 72nd
Diversity Index2 # 33 45th
Median Household Income # 16 74th
Per Capita Income # 13 79th

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