topographic

Unincorporated Marin County

68,994
Total Population in 2020
In 2020, Unincorporated Marin County was home to 68,994 people. Residents were a majority working age. The population was predominantly white, with more men than women.

Most Populous Demographics

CategoryDemographicTotalPercentage
Age18-6439,20057%
SexMale35,38751%
Race and Hispanic or LatinoWhite (Not Hispanic or Latino)49,37272%

Age

In 2020, Unincorporated Marin County's population was majority working-age adults, while those 65 and older were a moderately larger share than those under age 18. Looking at 10-year age ranges, 50-59 was the largest group.

Population by Age Range

03k6k9k12k0-910-1920-2930-3940-4950-5960-6970-7980+9%12%7%10%14%16%15%12%5%
03k6k9k12k9%12%7%10%14%16%15%12%5%0-910-1920-2930-3940-4950-5960-6970-7980+
/View Population by Age Range dynamic table

Population by Age Group

57%
18-64
    13,043
    Under 18
    39,200
    18-64
    16,751
    65 and over
/View Population by Age Group dynamic table

Table: Population by Age Range

Age RangePopulation in Unincorporated Marin County
TotalPercentage
0-95,9859%
10-198,38612%
20-295,1467%
30-396,80410%
40-499,32514%
50-5911,29216%
60-6910,53815%
70-798,03412%
80+3,4845%

Table: Population by Age Group

Age GroupPopulation in Unincorporated Marin County
TotalPercentage
Under 1813,04319%
18-6439,20057%
65 and over16,75124%
* For both charts above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), P12 Sex by Age for Selected Age Categories. Figures for unincorporated areas were calculated by subtracting the sum of counts for incorporated places from totals for the county.

Sex and Age

In 2020, males outnumbered females by a moderate amount in Unincorporated Marin County. Males 50-59 were the largest group by age, followed by females 50-59 and males 60-69. The biggest gap was in the 20-29 age group, where males were the larger share.

Population by Sex

51%
Male
    35,387
    Male
    33,607
    Female
/View Population by Sex dynamic table

Population by Sex and Age

01.5k3k4.5k6k0-910-1920-2930-3940-4950-5960-6970-7980+3,0674,3512,8363,6434,8565,8435,3143,9361,5412,9184,0352,3103,1614,4695,4495,2244,0981,943
01.5k3k4.5k6k0-910-1920-2930-3940-4950-5960-6970-7980+3,0674,3512,8363,6434,8565,8435,3143,9361,5412,9184,0352,3103,1614,4695,4495,2244,0981,943
6k4.5k3k1.5k01.5k3k4.5k6k0-910-1920-2930-3940-4950-5960-6970-7980+3,0674,3512,8363,6434,8565,8435,3143,9361,5412,9184,0352,3103,1614,4695,4495,2244,0981,943
/View Population by Sex and Age dynamic table
Male
Female

Table: Population by Sex

SexUnincorporated Marin County
TotalPercentage
Male35,38751%
Female33,60749%

Table: Population by Sex and Age

Sex and AgeUnincorporated Marin County
TotalPercentage
Male35,38751%
Male: 0-93,0674%
Male: 10-194,3516%
Male: 20-292,8364%
Male: 30-393,6435%
Male: 40-494,8567%
Male: 50-595,8438%
Male: 60-695,3148%
Male: 70-793,9366%
Male: 80+1,5412%
Female33,60749%
Female: 0-92,9184%
Female: 10-194,0356%
Female: 20-292,3103%
Female: 30-393,1615%
Female: 40-494,4696%
Female: 50-595,4498%
Female: 60-695,2248%
Female: 70-794,0986%
Female: 80+1,9433%
* For both charts above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), P12 Sex by Age for Selected Age Categories. Figures for unincorporated areas were calculated by subtracting the sum of counts for incorporated places from totals for the county.

Race and Hispanic or Latino

72%
White (Not Hispanic or Latino)
In 2020, Unincorporated Marin County had a predominantly white population. Hispanic residents also made up a notable segment, while other/multiracial and Asian people were the next largest groups.

Population by Race and Hispanic or Latino

015k30k45k60kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multiracial*Hispanic or Latino (any race)72%4%<1%6%<1%6%12%
015k30k45k60kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multiracial*Hispanic or Latino (any race)72%4%<1%6%<1%6%12%
015k30k45k60kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multiracial*Hispanic or Latino (any race)72%4%<1%6%<1%6%12%
/View Population by Race and Hispanic or Latino dynamic table

Table: Population by Race and Hispanic or Latino

Race and Hispanic or LatinoPopulation in Unincorporated Marin County
TotalPercentage
White49,37272%
Black or African American3,0264%
American Indian / Alaska Native211<1%
Asian3,9206%
Native Hawaiian / Pacific Islander125<1%
Other / Multiracial4,3456%
Hispanic or Latino (any race)7,99512%
* Categorized as Not Hispanic. This means that all the racial groups marked with an asterisk — White, Black or African American, American Indian / Alaska Native, Asian, Native Hawaiian / Pacific Islander, and Other / Multiracial — do not include individuals who identify as Hispanic or Latino. The "Hispanic or Latino (any race)" category is separate, as Hispanic/Latino is considered an ethnicity rather than a racial category. For the chart above, the data is collected from the U.S. Census Bureau Decennial Data 2020, Demographic and Housing Characteristics File (DHC), P5 Hispanic or Latino Origin by Race. Figures for unincorporated areas were calculated by subtracting the sum of counts for incorporated places from totals for the county.