Sonoma County CA Information


Sonoma County Subdivisions

Jump to... (On This Page!)
  1. Sonoma County 2018 Demographic Data
  2. Growth Rates forSonoma County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2018 Demographics

Sonoma County CA Data & Demographics (As of July 1, 2018)


Total Population 497,218
Population in Households 486,822
Population in Familes 376,543
Population in Group Qrtrs 10,396
Population Density2 316
Diversity Index3 66


Median Household Income $70,221
Average Household Income $97,262
Per Capita Income $37,721


Total Housing Units 205,887 (100%)
Owner Occupied HU 117,143 (56.9%)
Renter Occupied HU 71,848 (34.9%)
Vacant Housing Units 16,896 ( 8.2%)
Median Home Value $579,190
Average Home Value $708,125


Total Households 188,991
Average Household Size 2.58
Family Households 119,119
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.33% 0.34%
Households 0.2% 0.27%
Families 0.21% 0.27%
Median Household Income   3.21%
Per Capita Income   3.6%


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, 2018 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 Density # 17 72nd
Diversity Index # 34 43rd
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.

Quick & Easy Ways to...

  1. Get Current Demographic Data for Cities, Towns, and ZIP Codes
  2. View Boundary Maps, for Cities, Towns, and ZIP Codes
  3. Locate Physical, Cultural, and Historical Features
  4. Research Public Schools & Attendance Zones

California Census Data Comparison Tool

Compare California July 1, 2018 Data
Highest or Lowest: