Australian Population in Orange County, CA by City : 2025 Ranking & Insights

The Australian population in Orange County, CA is reported at 1,293 residents, according to recent U.S. Census estimates. Several cities in Orange County - including Huntington Beach, Lake Forest, Laguna Niguel, and others - contribute to the Australian population, but the total county figure of 1,293 indicates additional presence beyond municipal borders. The sections below explores how Australian residents are distributed in California and the U.S.

Top 5 cities with the largest Australian population in Orange County

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  • 1
    Huntington Beach
    Australian population in Huntington Beach is 296
    0.15% of Huntington Beach population is Australian
  • 2
    Lake Forest
    Australian population in Lake Forest is 141
    0.16% of Lake Forest population is Australian
  • 3
    Laguna Niguel
    Australian population in Laguna Niguel is 115
    0.18% of Laguna Niguel population is Australian
  • 4
    Orange
    Australian population in Orange is 85
    0.06% of Orange population is Australian
  • 5
    Mission Viejo
    Australian population in Mission Viejo is 81
    0.09% of Mission Viejo population is Australian

Overview of Australian population in Orange County

  • Population Count and Percentage: American Community Survey data document Orange County with 1,293 Australian residents (0.041% of 3.2 million total county population), positioning the jurisdiction at the 99th percentile nationally among counties and 94th percentile within California for Australian population concentrations, despite absolute population figures.
  • Comparison to State and National Averages: Census Bureau's ACS data documents Orange County's Australian demographic representation of 0.041%, exceeding the national average of 0.029% while remaining below California's elevated state average of 0.047%, placing the county above national concentration levels while below state demographic averages.
  • Share of Total State Population: Official American Community Survey data documents Orange County with 1,293 Australian residents, representing 7.1% of California's total Australian population of 18,273.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data shows Orange County maintains 1.6 Australian Americans per square mile, representing more than thirteen times California's average of 0.12 per square mile, establishing the county as an exceptional concentration center comparable to major metropolitan demographic areas.
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34 Cities in Orange County Ranked by Australian Population

View Methodology
ACS data [1] show Australian populations distributed across multiple cities in the county, led by Huntington Beach, Lake Forest, Laguna Niguel, and Orange. The table below provides additional context, including total population, population density, and demographic distributions, based on current ACS data for 34 incorporated cities included in this analysis*.
cities in Orange County, CA ranked by Australian population count
Rank by Australian Population
City
Australian Population
% of Total City Population
% of Total Orange County Australian Population
5 Year Rank Trend
1 Huntington Beach 296 0.15% 22.89%
2 Lake Forest 141 0.16% 10.90%
3 Laguna Niguel 115 0.18% 8.89%
4 Orange 85 0.06% 6.57%
5 Mission Viejo 81 0.09% 6.26%
6 Costa Mesa 79 0.07% 6.11%
7 Newport Beach 71 0.08% 5.49%
8 70 0.02% 5.41%
9 56 0.32% 4.33%
10 52 0.10% 4.02%
11 44 0.19% 3.40%
12 32 0.05% 2.47%
13 27 0.01% 2.09%
14 25 0.08% 1.93%
15 22 0.02% 1.70%
16 13 0.04% 1.01%
17 11 0.19% 0.85%
18 10 0.01% 0.77%
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
19 0 - -
Need the complete table? Full rankings and the underlying data sets for California and other locations are available for purchase or license.

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 Orange County, CA by their Australian population, using the most recent ACS data available.

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

How We Ranked the Data

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

Sources

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