Romanian Population in California by County : 2025 Ranking & Insights

According to the latest U.S. Census estimates, California is home to 59,072 Romanian residents. Los Angeles County contains the largest Romanian community with 14,908 individuals, followed by Orange County (7,803), Sacramento County (7,338), and several other counties contributing to this statewide total. The remaining difference may reflect Romanian populations in lower-population counties not listed above or minor reporting adjustments in the census data. This demographic breakdown ranks all counties in California by their Romanian population, offering insights into community patterns across the state.

Top 5 counties with the largest Romanian population in California

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  • 1
    Los Angeles County
    Romanian population in Los Angeles County is 14,908
    0.15% of Los Angeles County population is Romanian
  • 2
    Orange County
    Romanian population in Orange County is 7,803
    0.25% of Orange County population is Romanian
  • 3
    Sacramento County
    Romanian population in Sacramento County is 7,338
    0.46% of Sacramento County population is Romanian
  • 4
    San Diego County
    Romanian population in San Diego County is 4,125
    0.13% of San Diego County population is Romanian
  • 5
    Riverside County
    Romanian population in Riverside County is 3,906
    0.16% of Riverside County population is Romanian

Overview of Romanian population in California

  • Population Count and Percentage: American Community Survey data indicate California contains 59,072 Romanian residents (0.15% of 39.2 million total state population), positioning the state at the 100th percentile nationally among U.S. states for Romanian population concentrations.
  • Comparison to State and National Averages: U.S. Census data records indicate California's Romanian population of 0.15% exceeds the national average of 0.14% by a factor of 1.1.
  • Share of Total National Population: Official American Community Survey data indicates California's 59,072 Romanian residents constitute 13.1% of the nation's total Romanian population of 451,491, placing the state among jurisdictions with the highest demographic concentrations, with 13.1% of all American Romanian Americans residing within state boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data indicates California's density of 0.38 Romanian Americans per square mile exceeds the national average of 0.13 per square mile by nearly triple, establishing the state as a significant concentration center for Romanian demographic communities.
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55 Counties in California Ranked by Romanian Population

View Methodology
American Community Survey data [1] show Romanian population in California distributed across multiple counties, led by Los Angeles County, Orange County, Sacramento County, and San Diego County, while several other counties recorded no residents identified as Americans of Romanian descent. The table below provides broader statistics, including total population figures, density measures, and demographic distributions based on current ACS data for all counties included in this analysis*.
counties in California ranked by Romanian population count
Rank by Romanian Population
County
Romanian Population
% of Total County Population
% of Total California Romanian Population
5 Year Rank Trend
1 Los Angeles County 14,908 0.15% 25.24%
2 Orange County 7,803 0.25% 13.21%
3 Sacramento County 7,338 0.46% 12.42%
4 San Diego County 4,125 0.13% 6.98%
5 Riverside County 3,906 0.16% 6.61%
6 Santa Clara County 3,173 0.17% 5.37%
7 Alameda County 2,467 0.15% 4.18%
8 2,096 0.25% 3.55%
9 2,064 0.50% 3.49%
10 1,721 0.08% 2.91%
11 1,227 0.11% 2.08%
12 1,038 0.14% 1.76%
13 985 0.12% 1.67%
14 548 0.11% 0.93%
15 494 0.19% 0.84%
16 442 0.05% 0.75%
17 427 0.16% 0.72%
18 379 0.17% 0.64%
19 349 0.08% 0.59%
20 321 0.15% 0.54%
21 288 0.03% 0.49%
22 287 0.15% 0.49%
23 273 0.10% 0.46%
24 249 0.03% 0.42%
25 236 0.05% 0.40%
26 234 0.04% 0.40%
27 192 0.23% 0.33%
28 167 0.11% 0.28%
29 158 0.03% 0.27%
30 136 0.09% 0.23%
31 129 0.03% 0.22%
32 120 0.12% 0.20%
33 118 0.13% 0.20%
34 92 0.07% 0.16%
35 91 0.07% 0.15%
36 74 0.03% 0.13%
37 72 0.04% 0.12%
38 71 0.10% 0.12%
39 69 0.13% 0.12%
40 30 0.07% 0.05%
40 30 0.03% 0.05%
41 28 0.06% 0.05%
42 22 0.08% 0.04%
43 15 0.05% 0.03%
44 14 0.03% 0.02%
45 13 0.02% 0.02%
46 10 0.05% 0.02%
47 9 0.33% 0.02%
48 6 0.00% 0.01%
49 4 0.01% 0.01%
50 0 - -
50 0 - -
50 0 - -
50 0 - -
50 0 - -
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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 county in California by their Romanian population, using the most recent ACS data available.

How the Census defines Romanian 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 Romanian 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 Romanian alone, while others identify as Romanian along with another race (such as Romanian and German).
  • We’ve used the “Romanian alone or in any combination” category unless noted otherwise, which gives a broader picture of the Romanian population in each area.

How We Ranked the Data

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

Sources

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