Population
Population
topographic
Population

Sonoma County

488,863
Total Population in 2020
In 2020, Sonoma County was home to 488,863 people. Residents were predominantly working age, while those 65 and older were a larger segment of the county than those under 18. The population was a majority white, with more women than men.

Most Populous Demographics

CategoryDemographicTotalPercentage
Age18-64291,13060%
SexFemale250,32851%
Race and Hispanic or LatinoWhite (Not Hispanic or Latino)285,79258%

Age

42.6
Median Age
In 2020, Sonoma County's population was a majority working-age adults, while those 65 and older were a moderately larger share of the county than those under age 18. Looking at 10-year age ranges, 60-69 was the largest group.

Population by Age Range

020k40k60k80k0-910-1920-2930-3940-4950-5960-6970-7980+10%12%12%13%12%13%14%10%4%
020k40k60k80k10%12%12%13%12%13%14%10%4%0-910-1920-2930-3940-4950-5960-6970-7980+
/View Population by Age Range dynamic table

Population by Age Group

60%18-64
    95,711
    Under 18
    291,130
    18-64
    102,022
    65 and over
/View Population by Age Group dynamic table

Table: Population by Age Range

Age RangePopulation in Sonoma County
TotalPercentage
0-948,81610%
10-1958,33312%
20-2956,78512%
30-3964,09613%
40-4958,83912%
50-5965,00713%
60-6968,38914%
70-7947,08410%
80+21,5144%

Table: Population by Age Group

Age GroupPopulation in Sonoma County
TotalPercentage
Under 1895,71120%
18-64291,13060%
65 and over102,02221%
* 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.

Sex and Age

In 2020, females outnumbered males by a moderate amount in Sonoma County. Females 60-69 were the largest group by age, followed by females 50-59 and females 30-39. The biggest gap was in the 60-69 age group, where females were the larger share.

Population by Sex

51%Female
    238,535
    Male
    250,328
    Female
/View Population by Sex dynamic table

Population by Sex and Age

09.5k19k28.5k38k0-910-1920-2930-3940-4950-5960-6970-7980+24,89630,02729,05232,04029,13131,47031,88821,5178,51423,92028,30627,73332,05629,70833,53736,50125,56713,000
09.5k19k28.5k38k0-910-1920-2930-3940-4950-5960-6970-7980+24,89630,02729,05232,04029,13131,47031,88821,5178,51423,92028,30627,73332,05629,70833,53736,50125,56713,000
38k28.5k19k9.5k09.5k19k28.5k38k0-910-1920-2930-3940-4950-5960-6970-7980+24,89630,02729,05232,04029,13131,47031,88821,5178,51423,92028,30627,73332,05629,70833,53736,50125,56713,000
/View Population by Sex and Age dynamic table
Male
Female

Table: Population by Sex

SexSonoma County
TotalPercentage
Male238,53549%
Female250,32851%

Table: Population by Sex and Age

Sex and AgeSonoma County
TotalPercentage
Male238,53549%
Male: 0-924,8965%
Male: 10-1930,0276%
Male: 20-2929,0526%
Male: 30-3932,0407%
Male: 40-4929,1316%
Male: 50-5931,4706%
Male: 60-6931,8887%
Male: 70-7921,5174%
Male: 80+8,5142%
Female250,32851%
Female: 0-923,9205%
Female: 10-1928,3066%
Female: 20-2927,7336%
Female: 30-3932,0567%
Female: 40-4929,7086%
Female: 50-5933,5377%
Female: 60-6936,5017%
Female: 70-7925,5675%
Female: 80+13,0003%
* 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.

Race and Hispanic or Latino

58%
White (Not Hispanic or Latino)
In 2020, Sonoma County had a majority white population. Hispanic residents also made up a significant segment of the county, while other/multiracial and Asian people were the next largest groups.

Population by Race and Hispanic or Latino

075k150k225k300kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multi-racial*Hispanic or Latino (any race)58%1%<1%5%<1%6%29%
075k150k225k300kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multi-racial*Hispanic or Latino (any race)58%1%<1%5%<1%6%29%
075k150k225k300kWhite*Black or African American*American Indian / Alaska Native*Asian*Native Hawaiian / Pacific Islander*Other / Multi-racial*Hispanic or Latino (any race)58%1%<1%5%<1%6%29%
/View Population by Race and Hispanic or Latino dynamic table

Table: Population by Race and Hispanic or Latino

Race and Hispanic or LatinoPopulation in Sonoma County
TotalPercentage
White285,79258%
Black or African American7,1251%
American Indian / Alaska Native3,053<1%
Asian22,2395%
Native Hawaiian / Pacific Islander1,708<1%
Other / Multi-racial27,5086%
Hispanic or Latino (any race)141,43829%
* 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 / Multi-racial — 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.