2025

Counties in California ranked by Asian Population

This list ranks the 55 counties in California based on their Asian population, as estimated by the United States Census Bureau. It also highlights population changes in these counties over the past five years.
Updated Feb 10, 2025

Top 5 counties with the largest Asian population in California

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  • 1
    Los Angeles County
    Asian population in Los Angeles County is 1,689,402
    14.57% of Los Angeles County population is Asian
  • 2
    Santa Clara County
    Asian population in Santa Clara County is 813,066
    37.39% of Santa Clara County population is Asian
  • 3
    Orange County
    Asian population in Orange County is 791,027
    21.59% of Orange County population is Asian
  • 4
    Alameda County
    Asian population in Alameda County is 596,910
    32.09% of Alameda County population is Asian
  • 5
    San Diego County
    Asian population in San Diego County is 511,531
    13.06% of San Diego County population is Asian

List of 55 counties in California by Asian Population

View Methodology
Rank by Asian Population
County
Asian Population
% of Total County Population
% of Total California Asian Population
5 Year Rank Trend
1 Los Angeles County 1,689,402 14.57% 24.08%
2 Santa Clara County 813,066 37.39% 11.59%
3 Orange County 791,027 21.59% 11.28%
4 Alameda County 596,910 32.09% 8.51%
5 San Diego County 511,531 13.06% 7.29%
6 Sacramento County 331,566 18.19% 4.73%
7 San Francisco County 326,710 34.97% 4.66%
8 260,665 19.33% 3.72%
9 256,606 30.33% 3.66%
10 222,020 7.55% 3.16%
11 219,231 8.37% 3.13%
12 166,369 17.11% 2.37%
13 129,291 10.46% 1.84%
14 92,162 17.54% 1.31%
15 80,800 7.89% 1.15%
16 58,752 5.27% 0.84%
17 50,410 10.73% 0.72%
18 43,628 6.28% 0.62%
19 40,663 15.89% 0.58%
20 33,473 6.70% 0.48%
21 32,941 5.97% 0.47%
22 32,078 5.75% 0.46%
23 25,044 7.75% 0.36%
24 23,377 8.11% 0.33%
25 21,690 3.73% 0.31%
26 19,840 17.12% 0.28%
27 18,516 6.07% 0.26%
28 16,635 5.10% 0.24%
29 14,857 6.27% 0.21%
30 14,459 6.83% 0.21%
31 14,291 9.12% 0.20%
32 9,111 4.48% 0.13%
33 8,639 8.74% 0.12%
34 7,791 4.21% 0.11%
35 7,060 4.59% 0.10%
36 5,500 2.90% 0.08%
37 4,456 5.02% 0.06%
38 4,057 1.78% 0.06%
39 3,539 3.14% 0.05%
40 2,818 2.65% 0.04%
41 1,697 2.21% 0.02%
42 1,657 2.17% 0.02%
43 1,594 2.65% 0.02%
44 1,489 2.91% 0.02%
45 1,483 3.17% 0.02%
46 1,400 2.85% 0.02%
47 1,314 4.29% 0.02%
48 983 2.99% 0.01%
49 796 2.23% 0.01%
50 524 2.43% 0.01%
51 476 3.10% 0.01%
52 454 1.72% 0.01%
53 217 1.02% -
54 131 1.39% -

List of counties with no Asian Population in California

According to data from the United States Census Bureau, the following counties in California have no recorded Asian population*:
  • Sierra County
* These counties were not included in the ranking above, as they do not meet the population criteria. It is possible that a small population exists but was not reported or captured due to limitations or variations in Census data collection and reporting.

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 counties in California 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 counties. To provide additional context, we’ve also included two key percentages:
  1. % of Total County Population – This shows what percentage of the total state population identifies as Asian .
  2. % of Total California 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.
  • Counties 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.