Alameda County Population

1860–2026

1.64M

2026 projection

2.6% since 2020 (decrease)

00.5M1M1.5M2M186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Alameda County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20261,636,636+60.00%
20251,636,630+60.00%
20241,636,624+3,5690.22%
20231,633,055-830.01%
20221,633,138-11,1370.68%
20211,644,275-36,2142.15%
20201,680,489+12,0770.72%
20191,668,412+1,8160.11%
20181,666,596+6,7720.41%
20171,659,824+9,0590.55%

Showing 10 of 31 years.

Alameda County Demographics

39median age

Median age

Female39.7 yrs
Male38.4 yrs

Adults

1,323,197
254,161 seniors (65+) · 19% of adults1,069,036 other adults

Sex

Female 50.4% · 830,642Male 49.6% · 818,831

Population by age

MaleFemale85+ years, male: 11,34385+ years, female: 19,86680–84 years, male: 12,76680–84 years, female: 16,15975–79 years, male: 19,60475–79 years, female: 25,30370–74 years, male: 31,43870–74 years, female: 36,70865–69 years, male: 38,37065–69 years, female: 42,60460–64 years, male: 47,85760–64 years, female: 47,69955–59 years, male: 51,68055–59 years, female: 52,80150–54 years, male: 54,99150–54 years, female: 53,57545–49 years, male: 56,16945–49 years, female: 55,24240–44 years, male: 63,82640–44 years, female: 61,97635–39 years, male: 69,43235–39 years, female: 66,82130–34 years, male: 71,20330–34 years, female: 70,53225–29 years, male: 57,10625–29 years, female: 57,36620–24 years, male: 45,80020–24 years, female: 45,52815–19 years, male: 48,99015–19 years, female: 47,17910–14 years, male: 47,76110–14 years, female: 45,8925–9 years, male: 46,2145–9 years, female: 43,2910–4 years, male: 44,2810–4 years, female: 42,10085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–420K20K40K40K60K60K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 16,495 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Alameda County Income

$129,367median household income

Median household income

$129,367

Half of households earn more, half earn less

Median earnings

$76,263

Typical yearly pay for a worker 25 or older.

Poverty rate

9.2%

About 1 in 11 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Alameda County Marital Status

49% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married49%51%47%
Never married37%40%35%
Divorced8%6%9%
Widowed4%2%7%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year