Sonoma County CA Information


Sonoma County Subdivisions

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


Total Population 509,142
Daytime Population: Workers 220,792
Daytime Population: Residents 264,749
Total Daytime Population (TDP) 485,541
Ratio TDP/Total Population1 0.95
Population in Households 498,718
Population in Familes 382,209
Population in Group Qrtrs 10,424
Population Density2 323
Diversity Index3 66


Median Household Income $66,783
Average Household Income $93,483
Per Capita Income $36,288


Total Housing Units 212,373 (100%)
Owner Occupied HU 114,402 (53.9%)
Renter Occupied HU 79,228 (37.3%)
Vacant Housing Units 18,743 ( 8.8%)
Median Home Value $531,853
Average Home Value $606,651


Total Households 193,630
Average Household Size 2.58
Family Households 121,977
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 0.7% 0.7%
Households 0.57% 0.63%
Families 0.56% 0.62%
Median Household Income   2.48%
Per Capita Income   2.34%


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, 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 # 17 72nd
Population Density # 17 72nd
Diversity Index # 34 43rd
Median Household Income # 16 74th
Per Capita Income # 12 81st

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