Vietnamese Population in Santa Clara County, CA by City : 2025 Ranking & Insights

The Vietnamese population in Santa Clara County, CA is recorded at 152,550 residents, based on the latest U.S. Census estimates. Each city in Santa Clara County, CA has some Vietnamese population, but the county''s higher total suggests additional rural or non-municipal representation. The analysis below explores how Vietnamese communities are spread across Santa Clara County, CA and comparable counties throughout California.

Top 5 cities with the largest Vietnamese population in Santa Clara County

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  • 1
    San Jose
    Vietnamese population in San Jose is 121,631
    12.29% of San Jose population is Vietnamese
  • 2
    Milpitas
    Vietnamese population in Milpitas is 10,896
    13.93% of Milpitas population is Vietnamese
  • 3
    Santa Clara
    Vietnamese population in Santa Clara is 4,142
    3.20% of Santa Clara population is Vietnamese
  • 4
    Sunnyvale
    Vietnamese population in Sunnyvale is 3,570
    2.33% of Sunnyvale population is Vietnamese
  • 5
    Morgan Hill
    Vietnamese population in Morgan Hill is 1,774
    3.93% of Morgan Hill population is Vietnamese

Overview of Vietnamese population in Santa Clara County

  • Population Count and Percentage: American Community Survey data shows Santa Clara County contains 152,550 Vietnamese residents (8% of 1.9 million total county population), ranking the jurisdiction at the 99th percentile nationally among counties and 96th percentile within California for Vietnamese demographic concentrations across both absolute and proportional measures.
  • Comparison to State and National Averages: Census Bureau's ACS show Santa Clara County's Vietnamese population of 8% surpassing both California's state average of 2.1% and the national average of 0.68%, positioning the county as a high-concentration jurisdiction exceeding demographic benchmarks across all geographic scales.
  • Share of Total State Population: Official American Community Survey indicate Santa Clara County's 152,550 Vietnamese residents constitute 18.8% of California's total Vietnamese population of 811,048, placing the county among jurisdictions with the highest demographic concentrations, with 18.8% of all California Vietnamese Americans residing within county boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data shows Santa Clara County maintains 118.2 Vietnamese Americans per square mile, representing twenty-two and three-quarters times California's average of 5.2 per square mile, establishing the county as an exceptional concentration center comparable to major metropolitan demographic areas.
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15 Cities in Santa Clara County Ranked by Vietnamese Population

View Methodology
ACS data [1] confirm Vietnamese populations in every incorporated city in the county, with the largest counts in San Jose, Milpitas, Santa Clara, and Sunnyvale. The table below provides detailed figures, including total population, density measures, and demographic distributions, based on the current ACS data for all 15 incorporated cities included in this analysis*.
cities in Santa Clara County, CA ranked by Vietnamese population count
Rank by Vietnamese Population
City
Vietnamese Population
% of Total City Population
% of Total Santa Clara County Vietnamese Population
5 Year Rank Trend
1 San Jose 121,631 12.29% 79.73%
2 Milpitas 10,896 13.93% 7.14%
3 Santa Clara 4,142 3.20% 2.72%
4 Sunnyvale 3,570 2.33% 2.34%
5 Morgan Hill 1,774 3.93% 1.16%
6 Mountain View 1,559 1.89% 1.02%
7 Palo Alto 1,055 1.57% 0.69%
8 1,012 3.34% 0.66%
9 801 1.36% 0.53%
10 757 1.77% 0.50%
11 568 0.97% 0.37%
12 289 0.88% 0.19%
13 234 0.76% 0.15%
14 34 0.41% 0.02%
15 21 0.61% 0.01%
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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 city in Santa Clara County, CA by their Vietnamese population, using the most recent ACS data available.

How the Census defines Vietnamese population

The U.S. Census Bureau allows people to self-identify their ancestry, meaning individuals can write upto ancestries when responding to the survey. In this ranking, we include everyone who identifies as having Vietnamese ancestry, whether alone or in combination with another ancestry.
Here are a few important things to know about how ancestry is reported:
  • Some people identify as Vietnamese alone, while others identify as Vietnamese along with another race (such as Vietnamese and German).
  • We’ve used the “Vietnamese alone or in any combination” category unless noted otherwise, which gives a broader picture of the Vietnamese population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as Vietnamese alone or in combination in city. 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 Vietnamese .
  2. % of Total Santa Clara County Vietnamese Population – This tells us how much of the entire U.S. Vietnamese 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 Vietnamese 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.
  • City that don’t have any reported Vietnamese 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 Vietnamese populations are most concentrated while keeping the numbers easy to understand.

Sources

  1. 2019-2023 5-Year Estimates.
  2. 2023.