Alameda County, CA Population

Overview

1.67 million

Total Population

38.0

Median age

50.54%

Female population %

97.9:100

Gender ratio (M:F)

30-34 years

Largest age group

45.3

Total dependency ratio

White

Largest racial group

374,542

Hispanic population

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

TABLE OF CONTENTS

Age

Alameda County's population is young compared to the rest of the country:

The median age in Alameda County is 38.0, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Alameda County's population under 18 was 20.57%, compared to the 22.51% nationwide.
Alameda County's elderly or the senior population (over 65 age) was 13.99% as compared to 16.04% nationwide.
Of the total population in Alameda County, 17.18% were under the age of 15, 19.21% aged 15 to 29, 49.62% aged 30 to 64, 12.23% aged 65 to 84, and 1.76% were 85 years of age and older.

There are 18,021 more females than males in Alameda County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.54% females and 49.46% males in Alameda County, CA.
The Alameda County, CA gender ratio is 97.9:100 i.e. 97.9 men to 100 women (0.979).
For male population, the largest age group is 30-34 years with a population of 72,187.
For the female population, the largest age group is 30-34 years with a population of 71,533.

Alameda County's population has become increasingly diverse:

Racial distribution of Alameda County population: 35.91% are White, 10.20% are Black or African American, 0.74% are American Indian and Alaska Native, 31.59% are Asian, 0.80% are Native Hawaiian and other Pacific Islander, 11.82% are some other race and 8.94% are multiracial.
Alameda County's racial breakdown clearly shows that there is no majority of any race in the county.
By ethnicity, 374,542 is Hispanic or Latino (of any race), and 1.30 million (77.61% of the total population) is Non-Hispanic.
The largest racial group in Alameda County is White with a population of 600,791 (35.91% of the total population).

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

The peak population was 1,680,380 in the year 2020
From 2000 to 2010, Alameda County's population increased by 62,911 (4.34%), as compared to the national growth of 9.63%.
From 2010 to 2020, Alameda County's population increased by 167,383 (11.06%), 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, Alameda County's population was lowest in year 2005 at 1,442,383.