Marin County CA Information


Marin County Subdivisions

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


Total Population 255,719
Population in Households 247,484
Population in Familes 187,447
Population in Group Qrtrs 8,235
Population Density1 492
Diversity Index2 54


Total Households 104,673
Average Household Size 2.36
Family Households 63,667
Average Family Size 3


Total Housing Units 112,378 (100%)
Owner Occupied HU 63,653 (56.6%)
Renter Occupied HU 41,020 (36.5%)
Vacant Housing Units 7,705 ( 6.9%)
Median Home Value $784,561
Average Home Value $792,558


Median Household Income $87,041
Average Household Income $130,565
Per Capita Income $54,071
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.25% 0.6%
Households 0.27% 0.6%
Families 0.31% 0.63%
Median Household Income   3.21%
Per Capita Income   2.84%
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.


Marin County CA - Peer Comparisons by Rank and Percentile

The table below compares Marin 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 # 26 57th
Population Density1 # 13 79th
Diversity Index2 # 43 28th
Median Household Income # 3 97th
Per Capita Income # 1 100th

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