South San Francisco

66,105

Total Population in 2020

In 2020, South San Francisco was home to 66,105 people. Residents were predominantly working age, while those under 18 were a larger segment of the community than those 65 and older. The population was diverse, with no racial group in the majority.

Most Populous Demographics

Category	Demographic	Total	Percentage
Age	18-64	42,487	64%
Sex	Female	33,436	51%
Race and Hispanic or Latino	Asian (Not Hispanic or Latino)	26,994	41%

Age

40.2

Median Age

In 2020, South San Francisco's population was a majority working-age adults, while those under age 18 were a moderately larger share of the community than those 65 and older. Looking at 10-year age ranges, 30-39 was the largest group.

Population by Age Range

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Population by Age Group

12,318

Under 18

42,487

18-64

11,300

65 and over

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Table: Population by Age Range

Age Range	Population in South San Francisco
Age Range	Total	Percentage
0-9	6,829	10%
10-19	6,879	10%
20-29	8,762	13%
30-39	10,376	16%
40-49	8,796	13%
50-59	8,696	13%
60-69	8,133	12%
70-79	4,765	7%
80+	2,869	4%

Table: Population by Age Group

Age Group	Population in South San Francisco
Age Group	Total	Percentage
Under 18	12,318	19%
18-64	42,487	64%
65 and over	11,300	17%

* 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 South San Francisco. Males 30-39 were the largest group by age, followed by females 30-39 and males 20-29. The biggest gap was in the 80-and-older age group, where females were the larger share.

Population by Sex

32,669

Male

33,436

Female

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Population by Sex and Age

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Male

Female

Table: Population by Sex

Sex	South San Francisco
Sex	Total	Percentage
Male	32,669	49%
Female	33,436	51%

Table: Population by Sex and Age

Sex and Age	South San Francisco
Sex and Age	Total	Percentage
Male	32,669	49%
Male: 0-9	3,494	5%
Male: 10-19	3,547	5%
Male: 20-29	4,611	7%
Male: 30-39	5,319	8%
Male: 40-49	4,475	7%
Male: 50-59	4,162	6%
Male: 60-69	3,872	6%
Male: 70-79	2,095	3%
Male: 80+	1,094	2%
Female	33,436	51%
Female: 0-9	3,335	5%
Female: 10-19	3,332	5%
Female: 20-29	4,151	6%
Female: 30-39	5,057	8%
Female: 40-49	4,321	7%
Female: 50-59	4,534	7%
Female: 60-69	4,261	6%
Female: 70-79	2,670	4%
Female: 80+	1,775	3%

* 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

41%

Asian (Not Hispanic or Latino)

In 2020, South San Francisco had a diverse population with no race/ethnicity being a majority. Asian and Hispanic people were the largest groups in the community, while white and other/multiracial residents were the next biggest segments of the population.

Population by Race and Hispanic or Latino

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Table: Population by Race and Hispanic or Latino

Race and Hispanic or Latino	Population in South San Francisco
Race and Hispanic or Latino	Total	Percentage
White	11,905	18%
Black or African American	1,184	2%
American Indian / Alaska Native	125	<1%
Asian	26,994	41%
Native Hawaiian / Pacific Islander	996	2%
Other / Multi-racial	3,251	5%
Hispanic or Latino (any race)	21,650	33%

* 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.