2025

Cities in Contra Costa County, CA ranked by Asian Population

This list ranks the 19 cities in Contra Costa County based on their Asian population, as estimated by the United States Census Bureau. It also highlights population changes in these cities over the past five years.
Updated Jan 24, 2025

Top 5 cities with the largest Asian population in Contra Costa County

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  • 1
    San Ramon
    Asian population in San Ramon is 45,459
    48.73% of San Ramon population is Asian
  • 2
    Concord
    Asian population in Concord is 22,614
    15.20% of Concord population is Asian
  • 3
    Richmond
    Asian population in Richmond is 19,141
    14.11% of Richmond population is Asian
  • 4
    Antioch
    Asian population in Antioch is 18,828
    13.72% of Antioch population is Asian
  • 5
    Pittsburg
    Asian population in Pittsburg is 17,614
    19.36% of Pittsburg population is Asian

List of 19 cities in Contra Costa County, CA by Asian Population

View Methodology
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Rank by Asian Population
City
Asian Population
% of Total City Population
% of Total Contra Costa County Asian Population
5 Year Rank Trend
1 San Ramon 45,459 48.73% 19.98%
2 Concord 22,614 15.20% 9.94%
3 Richmond 19,141 14.11% 8.41%
4 Antioch 18,828 13.72% 8.27%
5 Pittsburg 17,614 19.36% 7.74%
6 Walnut Creek 14,883 18.75% 6.54%
7 Brentwood 13,049 17.56% 5.73%
8 12,568 42.12% 5.52%
9 10,243 21.54% 4.50%
10 8,839 29.80% 3.88%
11 7,788 19.67% 3.42%
12 6,186 13.79% 2.72%
13 5,471 24.60% 2.40%
14 5,396 10.42% 2.37%
15 4,782 12.87% 2.10%
16 4,689 25.16% 2.06%
17 4,595 20.23% 2.02%
18 3,400 11.80% 1.49%
19 2,001 15.85% 0.88%

Methodology

This ranking list is based on data from the American Community Survey (ACS) 5-Year Estimates, conducted by the U.S. Census Bureau. The ACS is one of the most reliable sources for understanding population trends across different locations, and it provides estimates for various racial and ethnic groups at city, county, state and all geography levels down to the Census block group.
This list ranks cities in Contra Costa County, CA by their Asian population, using the most recent ACS data available.

How the Census Defines Asian Population

The U.S. Census Bureau allows people to self-identify their race, meaning individuals can choose one or more racial categories when responding to the survey. In this ranking, we include everyone who identifies as Asian, whether alone or in combination with another race.
Here are a few important things to know about how race is reported:
  • Some people identify as Asian alone, while others identify as Asian along with another race (such as Asian and White).
  • Hispanic / Latino origin is reported separately from race, so someone can be both Hispanic and Asian .
  • We’ve used the “Asian alone or in combination” category unless noted otherwise, which gives a broader picture of the Asian population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as Asian alone or in combination in cities. To provide additional context, we’ve also included two key percentages:
  1. % of Total City Population – This shows what percentage of the total state population identifies as Asian .
  2. % of Total Contra Costa County Asian Population – This tells us how much of the entire U.S. Asian population lives in that state.
To keep things simple, all population numbers have been rounded to the nearest whole number, and percentages are rounded to one decimal place. Because of rounding, some percentages may not add up to exactly 100%.

Things to Keep in Mind

Like all survey-based data, ACS estimates come with some limitations. Here are a few things to be aware of:
  • In places with very small Asian populations, the numbers may not be reported at all due to privacy protections or sampling variability in the survey.
  • Since the ACS is based on a sample, the numbers are estimates, not exact counts. That means they may slightly differ from other sources like the decennial U.S. Census.
  • Cities that don’t have any reported Asian population are not included in the ranking but are listed separately below for reference.
This ranking is meant to provide a clear, data-driven look at where Asian populations are most concentrated while keeping the numbers easy to understand.

Sources

U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.