US Census breakdown: The largest racial group in each Bay Area county

( KRON ) — Newly released data from the U.S. Census Bureau breaks down the largest racial group in each of the nine Bay Area counties. The data, released on Thursday in a report from the 2020 Census, is divided into subcategories, including age, sex and race.

The Bay Area’s population is 7,765,640, and the largest racial group is white people at 39.2% (3,047,707), according to the latest U.S. Census data. The region’s second-largest group is Asians at approximately 27.9% (2,171,656).

Here’s the breakdown showing each Bay Area county’s largest and second-largest racial group :

Alameda County

• Asian: 32.4% (545,261)
• White: 31.1% (523,836)
• Total population (all races): 1,682,353

Contra Costa County

• White: 43% (501,697)
• Hispanic: 27% (314,900)
• Total population: 1,165,927

Marin County

• White: 68.4% (179,377)
• Hispanic: 18.8% (49,410)
• Total population: 262,321

Napa County

• White: 55.2% (76,158)
• Hispanic: 35.4% (48,829)
• Total population: 138,019

San Francisco County

• White: 41.3% (361,382)
• Asian: 33.9% (296,505)
• Total population: 873,965

San Mateo County

• White: 39.3% (300,188)
• Asian: 30.1% (230,242)
• Total population: 764,442

Santa Clara County

• Asian: 39.2% (759,030)
• White: 32.2% (622,617)
• Total population: 1,936,259

Solano County

• White: 38.8% (175,768)
• Hispanic: 28.3% (128,155)
• Total population: 453,491

Sonoma County

• White: 62.7% (306,684)
• Hispanic: 28.9% (141,438)
• Total population: 488,863

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Although Hispanics are not the largest group in any of the nine Bay Area counties, the group comprises at least a quarter (25%) of the total population in six counties: Contra Costa (27%), Napa (35.4%), San Mateo (25%), Santa Clara (25.2%), Solano (28.3%) and Sonoma (28.9%).

Since the US Census does not count the Bay Area as its own singular entity, KRON4 compiled the data by combining numbers from all nine Bay Area counties. That is how the Bay Area area’s total population was calculated.

U.S. Census Day was on April 1, 2020. The census is taken every 10 years. However, due to the COVID-19 pandemic, the census had to make operational adjustments in its counting and data gathering.

For the U.S. Census’ full breakdown, click here .

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