Marin County CA Information


Marin County Subdivisions

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


Total Population 261,461
Population in Households 253,503
Population in Familes 193,276
Population in Group Qrtrs 7,958
Population Density1 503
Diversity Index2 55


Median Household Income $107,212
Average Household Income $155,367
Per Capita Income $63,595


Total Housing Units 113,338 (100%)
Owner Occupied HU 64,079 (56.5%)
Renter Occupied HU 41,834 (36.9%)
Vacant Housing Units 7,425 ( 6.6%)
Median Home Value $1,059,442
Average Home Value $1,182,869


Total Households 105,913
Average Household Size 2.39
Family Households 64,306
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. 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 0.43% 0.42%
Households 0.31% 0.34%
Families 0.32% 0.34%
Median Household Income   2.93%
Per Capita Income   3.09%


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, 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 # 26 57th
Population Density # 13 79th
Diversity Index # 43 28th
Median Household Income # 1 100th
Per Capita Income # 1 100th

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