Italian Population in California by County : 2025 Ranking & Insights

According to U.S. Census estimates, the Italian population in California stands at 1.3 million. Every county reports a non-zero population, with Los Angeles County leading at 250,797, followed by San Diego County (133,755) and Orange County (117,191). The combined total across counties is slightly lower than the statewide figure - a gap that may reflect rounding, data lag, or unassigned residents in certain census tracts. This analysis ranks all counties in California by their Italian population, offering a localized perspective on how the community is distributed across the state.

Top 5 counties with the largest Italian population in California

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  • 1
    Los Angeles County
    Italian population in Los Angeles County is 250,797
    2.55% of Los Angeles County population is Italian
  • 2
    San Diego County
    Italian population in San Diego County is 133,755
    4.07% of San Diego County population is Italian
  • 3
    Orange County
    Italian population in Orange County is 117,191
    3.70% of Orange County population is Italian
  • 4
    Riverside County
    Italian population in Riverside County is 75,189
    3.07% of Riverside County population is Italian
  • 5
    Santa Clara County
    Italian population in Santa Clara County is 64,414
    3.38% of Santa Clara County population is Italian

Overview of Italian population in California

  • Population Count and Percentage: American Community Survey documents California with 1.3 million Italian residents (3.4% of 39.2 million total state population), ranking the state at the 95th percentile nationally among U.S. jurisdictions for Italian demographic representation.
  • Comparison to State and National Averages: U.S. Census surveys show California's Italian demographic representation of 3.4% remains below the national average of 4.9%, positioning the state below typical U.S. demographic distribution patterns.
  • Share of Total National Population: Official American Community Survey records show California hosts 1.3 million Italian residents, representing 8.3% of the nation's total Italian population of 16.2 million, establishing the state as a significant demographic concentration center within national boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data show California maintains 8.6 Italian Americans per square mile compared to the national average of 4.6, indicating higher demographic concentration relative to national averages.
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55 Counties in California Ranked by Italian Population

View Methodology
American Community Survey data [1] show Italian populations across every county in California, with demographic distributions ranging from the highest population in Los Angeles County to the lowest in $rank_n_geo_name. 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 Italian population count
Rank by Italian Population
County
Italian Population
% of Total County Population
% of Total California Italian Population
5 Year Rank Trend
1 Los Angeles County 250,797 2.55% 18.63%
2 San Diego County 133,755 4.07% 9.93%
3 Orange County 117,191 3.70% 8.70%
4 Riverside County 75,189 3.07% 5.58%
5 Santa Clara County 64,414 3.38% 4.78%
6 Sacramento County 60,394 3.81% 4.49%
7 Contra Costa County 55,261 4.76% 4.10%
8 51,015 2.33% 3.79%
9 49,270 2.98% 3.66%
10 38,172 7.86% 2.84%
11 37,898 4.53% 2.81%
12 35,851 4.81% 2.66%
13 34,842 4.16% 2.59%
14 29,080 3.69% 2.16%
15 26,393 6.40% 1.96%
16 25,282 2.50% 1.88%
17 19,224 6.83% 1.43%
18 19,050 7.36% 1.41%
19 18,096 3.28% 1.34%
20 17,702 1.94% 1.31%
21 17,089 3.85% 1.27%
22 16,218 3.60% 1.20%
23 15,975 6.01% 1.19%
24 15,213 3.49% 1.13%
25 12,753 6.63% 0.95%
26 10,543 5.03% 0.78%
27 9,608 5.29% 0.71%
28 8,818 4.05% 0.65%
29 7,790 5.73% 0.58%
30 7,685 5.68% 0.57%
31 6,998 1.47% 0.52%
32 6,689 6.53% 0.50%
33 5,524 1.93% 0.41%
34 4,099 4.52% 0.30%
35 3,877 2.44% 0.29%
36 3,820 5.78% 0.28%
37 3,399 6.19% 0.25%
38 3,368 4.94% 0.25%
39 3,270 7.11% 0.24%
40 2,879 1.88% 0.21%
41 2,611 6.36% 0.19%
42 2,578 3.10% 0.19%
43 2,369 2.39% 0.18%
44 2,356 5.37% 0.18%
45 1,954 2.98% 0.15%
46 1,664 8.49% 0.12%
47 1,443 0.80% 0.11%
48 1,129 3.94% 0.08%
49 1,021 5.43% 0.08%
50 884 2.84% 0.07%
51 781 2.86% 0.06%
52 673 5.11% 0.05%
53 482 2.20% 0.04%
54 352 4.07% 0.03%
55 101 3.70% 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 county in California by their Italian population, using the most recent ACS data available.

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

How We Ranked the Data

This ranking is based on the total number of people who identified as Italian 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 Italian .
  2. % of Total California Italian Population – This tells us how much of the entire U.S. Italian 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 Italian 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 Italian 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 Italian populations are most concentrated while keeping the numbers easy to understand.

Sources

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