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

The Vietnamese population in Solano County, CA is recorded at 4,053 residents, based on the latest U.S. Census estimates. Each city in Solano 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 Solano County, CA and comparable counties throughout California.

Top 5 cities with the largest Vietnamese population in Solano County

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  • 1
    Vallejo
    Vietnamese population in Vallejo is 1,697
    1.36% of Vallejo population is Vietnamese
  • 2
    Fairfield
    Vietnamese population in Fairfield is 835
    0.70% of Fairfield population is Vietnamese
  • 3
    Vacaville
    Vietnamese population in Vacaville is 708
    0.69% of Vacaville population is Vietnamese
  • 4
    Suisun City
    Vietnamese population in Suisun City is 354
    1.21% of Suisun City population is Vietnamese
  • 5
    Benicia
    Vietnamese population in Benicia is 240
    0.89% of Benicia population is Vietnamese

Overview of Vietnamese population in Solano County

  • Population Count and Percentage: American Community Survey data document Solano County with 4,053 Vietnamese residents (0.9% of 450,824 total county population), positioning the jurisdiction at the 96th percentile nationally among counties and 70th percentile within California for Vietnamese population concentrations, despite absolute population figures.
  • Comparison to State and National Averages: Census Bureau's ACS data documents Solano County's Vietnamese demographic representation of 0.9%, exceeding the national average of 0.68% while remaining below California's elevated state average of 2.1%, placing the county above national concentration levels while below state demographic averages.
  • Share of Total State Population: Official American Community Survey data indicates Solano County contains 4,053 Vietnamese residents, representing less than 1% of California's total Vietnamese population of 811,048.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey show Solano County maintains 4.9 Vietnamese Americans per square mile, marginally below California's state average of 5.2 per square mile, placing the county near state demographic representation levels.
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7 Cities in Solano 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 Vallejo, Fairfield, Vacaville, and Suisun City. The table below provides detailed figures, including total population, density measures, and demographic distributions, based on the current ACS data for all 7 incorporated cities included in this analysis*.
cities in Solano County, CA ranked by Vietnamese population count
Rank by Vietnamese Population
City
Vietnamese Population
% of Total City Population
% of Total Solano County Vietnamese Population
5 Year Rank Trend
1 Vallejo 1,697 1.36% 41.87%
2 Fairfield 835 0.70% 20.60%
3 Vacaville 708 0.69% 17.47%
4 Suisun City 354 1.21% 8.73%
5 Benicia 240 0.89% 5.92%
6 Dixon 138 0.72% 3.40%
7 Rio Vista 2 0.02% 0.05%
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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 Solano 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 Solano 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.