Greek Population in Suffolk County, NY by City : 2025 Ranking & Insights

The Greek population in Suffolk County, NY is recorded at 18,632 residents, based on the latest U.S. Census estimates. Most cities in Suffolk County - including Brookhaven town, Huntington town, Smithtown town, and others - report non-zero figures, reflecting a broad and distributed Greek presence. However, the combined population across these cities exceeds the official county total - a likely result of rounding differences or sampling variations in small-population census data. The analysis below explores how Greek communities are spread across Suffolk County, NY and comparable counties throughout New York.

Top 5 cities with the largest Greek population in Suffolk County

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  • 1
    Brookhaven town
    Greek population in Brookhaven town is 5,719
    1.17% of Brookhaven town population is Greek
  • 2
    Huntington town
    Greek population in Huntington town is 4,446
    2.18% of Huntington town population is Greek
  • 3
    Smithtown town
    Greek population in Smithtown town is 2,806
    2.42% of Smithtown town population is Greek
  • 4
    Islip town
    Greek population in Islip town is 2,802
    0.83% of Islip town population is Greek
  • 5
    Babylon town
    Greek population in Babylon town is 1,215
    0.56% of Babylon town population is Greek

Overview of Greek population in Suffolk County

  • Population Count and Percentage: American Community Survey data shows Suffolk County contains 18,632 Greek residents (1.2% of 1.5 million total county population), ranking the jurisdiction at the 99th percentile nationally among counties and 95th percentile within New York for Greek demographic concentrations across both absolute and proportional measures.
  • Comparison to State and National Averages: Census Bureau's ACS show Suffolk County's Greek population of 1.2% surpassing both New York's state average of 0.7% and the national average of 0.36%, positioning the county as a high-concentration jurisdiction exceeding demographic benchmarks across all geographic scales.
  • Share of Total State Population: Official American Community Survey indicate Suffolk County's 18,632 Greek residents constitute 13.4% of New York's total Greek population of 138,993, placing the county among jurisdictions with the highest demographic concentrations, with 13.4% of all New York Greek Americans residing within county boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey document Suffolk County with 20.5 Greek Americans per square mile, more than six times New York's average density of 2.9 per square mile, placing the county among the most densely concentrated jurisdictions within the state.
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38 Cities in Suffolk County Ranked by Greek Population

View Methodology
ACS data [1] show Greek populations distributed across multiple cities in the county, led by Brookhaven town, Huntington town, Smithtown town, and Islip town. The table below provides additional context, including total population, population density, and demographic distributions, based on current ACS data for 38 incorporated cities included in this analysis*.
cities in Suffolk County, NY ranked by Greek population count
Rank by Greek Population
City
Greek Population
% of Total City Population
% of Total Suffolk County Greek Population
5 Year Rank Trend
1 Brookhaven town 5,719 1.17% 30.69%
2 Huntington town 4,446 2.18% 23.86%
3 Smithtown town 2,806 2.42% 15.06%
4 Islip town 2,802 0.83% 15.04%
5 Babylon town 1,215 0.56% 6.52%
6 Southampton town 781 1.13% 4.19%
7 Southold town 406 1.71% 2.18%
8 291 2.63% 1.56%
9 273 0.76% 1.47%
10 156 0.55% 0.84%
11 144 1.16% 0.77%
12 132 1.80% 0.71%
13 111 1.38% 0.60%
14 109 1.15% 0.59%
14 109 3.05% 0.59%
15 106 0.39% 0.57%
16 84 4.63% 0.45%
17 77 0.63% 0.41%
18 63 3.86% 0.34%
19 44 4.26% 0.24%
20 37 1.49% 0.20%
21 35 0.77% 0.19%
22 34 1.83% 0.18%
23 33 0.92% 0.18%
24 28 0.85% 0.15%
25 24 1.74% 0.13%
26 20 0.78% 0.11%
27 13 1.70% 0.07%
28 11 0.35% 0.06%
28 11 1.05% 0.06%
29 7 0.55% 0.04%
29 7 2.48% 0.04%
30 6 0.32% 0.03%
31 4 0.80% 0.02%
32 0 - -
32 0 - -
32 0 - -
32 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 city in Suffolk County, NY by their Greek population, using the most recent ACS data available.

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

How We Ranked the Data

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

Sources

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