Irish Population in Kings County, NY by City : 2025 Ranking & Insights

Irish residents in Kings County, NY number 102,861, with both incorporated cities - New York (376,460) and Brooklyn borough (102,861) - reporting a presence. While the county-level estimate appears slightly lower than the combined city counts, this occasionally happens due to independent census sampling methods. With no presence reported outside these two cities, the Irish population is clearly concentrated within municipal boundaries. Below, we explore how this pattern of dual-city presence compares to demographic layouts across New York.

Top 5 cities with the largest Irish population in Kings County

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  • 1
    New York
    Irish population in New York is 376,460
    4.42% of New York population is Irish
  • 2
    Brooklyn borough
    Irish population in Brooklyn borough is 102,861
    3.89% of Brooklyn borough population is Irish

Overview of Irish population in Kings County

  • Population Count and Percentage: American Community Survey data shows Kings County contains 102,861 Irish residents (3.9% of 2.6 million total county population), ranking the jurisdiction at the 98th percentile nationally among counties and 88th percentile within New York for Irish demographic concentrations across both absolute and proportional measures.
  • Comparison to State and National Averages: Census Bureau's ACS data indicate Kings County's Irish population of 3.9% remains below New York's state average of 10.6% and the national average of 9.4%, placing the county below demographic benchmarks across multiple geographic scales.
  • Share of Total State Population: Official American Community Survey data documents Kings County with 102,861 Irish residents, representing 4.9% of New York's total Irish population of 2.1 million.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey data shows Kings County maintains 1,482.6 Irish Americans per square mile, representing thirty-three and one-quarter times New York's average of 44.6 per square mile, establishing the county as an exceptional concentration center comparable to major metropolitan demographic areas.
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Kings County Cities by Irish Population

View Methodology
ACS [1] population records show New York and Brooklyn borough account for 376,460 and 102,861 Irish residents. The following table shows comprehensive population data, demographic percentages, density measurements, and complete comparison metrics for both cities in Kings County, NY.
cities in Kings County, NY ranked by Irish population count
Rank by Irish Population
City
Irish Population
% of Total City Population
% of Total Kings County Irish Population
5 Year Rank Trend
1 New York 376,460 4.42% 100.00%
2 Brooklyn borough 102,861 3.89% 100.00%
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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 Kings County, NY by their Irish population, using the most recent ACS data available.

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

How We Ranked the Data

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

Sources

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