San Mateo, CA Population

Overview

105,087

Total Population

37.7

Median age

50.37%

Female population %

98.5:100

Gender ratio (M:F)

30-34 years

Largest age group

50.4

Total dependency ratio

White

Largest racial group

25,306

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

San Mateo's population is young compared to the rest of the country:

The median age in San Mateo is 37.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
San Mateo's population under 18 was 20.58%, compared to the 22.51% nationwide.
San Mateo's elderly or the senior population (over 65 age) was 15.62% as compared to 16.04% nationwide.
Of the total population in San Mateo, 17.88% were under the age of 15, 17.12% aged 15 to 29, 49.38% aged 30 to 64, 12.78% aged 65 to 84, and 2.85% were 85 years of age and older.

There are 769 more females than males in San Mateo:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.37% females and 49.63% males in San Mateo, CA.
The San Mateo, CA gender ratio is 98.5:100 i.e. 98.5 men to 100 women (0.985).
For male population, the largest age group is 30-34 years with a population of 5,481.
For the female population, the largest age group is 30-34 years with a population of 4,768.

San Mateo's population has become increasingly diverse:

Racial distribution of San Mateo population: 48.64% are White, 1.93% are Black or African American, 0.81% are American Indian and Alaska Native, 25.46% are Asian, 1.77% are Native Hawaiian and other Pacific Islander, 12.23% are some other race and 9.16% are multiracial.
San Mateo's racial breakdown clearly shows that there is no majority of any race in the city.
By ethnicity, 25,306 is Hispanic or Latino (of any race), and 79,781 (75.92% of the total population) is Non-Hispanic.
The largest racial group in San Mateo is White with a population of 51,116 (48.64% of the total population).

San Mateo's population has already reached its peak and is showing a trend of decline:

The peak population was 105,327 in the year 2020
From 2000 to 2010, San Mateo's population increased by 4,416 (4.76%), as compared to the national growth of 9.63%.
From 2010 to 2020, San Mateo's population increased by 8,071 (8.30%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, San Mateo's population was lowest in year 2006 at 90,497.