Irish Population in Monmouth County, NJ by City : 2025 Ranking & Insights

The Irish population in Monmouth County, NJ is recorded at 126,125 residents, based on the latest U.S. Census estimates. Each city in Monmouth County, NJ has some Irish population, but the county''s higher total suggests additional rural or non-municipal representation. The analysis below explores how Irish communities are spread across Monmouth County, NJ and comparable counties throughout New Jersey.

Top 5 cities with the largest Irish population in Monmouth County

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  • 1
    Middletown township
    Irish population in Middletown township is 20,255
    30.30% of Middletown township population is Irish
  • 2
    Howell township
    Irish population in Howell township is 10,863
    20.24% of Howell township population is Irish
  • 3
    Wall township
    Irish population in Wall township is 7,385
    27.89% of Wall township population is Irish
  • 4
    Freehold township
    Irish population in Freehold township is 5,850
    16.47% of Freehold township population is Irish
  • 5
    Ocean township
    Irish population in Ocean township is 5,160
    18.57% of Ocean township population is Irish

Overview of Irish population in Monmouth County

  • Population Count and Percentage: American Community Survey data document Monmouth County with 126,125 Irish residents (19.6% of 643,615 total county population), placing the jurisdiction at the 99th percentile nationally among counties and 95th percentile within New Jersey for Irish population density, with demographic concentrations among the highest nationwide.
  • Comparison to State and National Averages: Census Bureau's ACS show Monmouth County's Irish population of 19.6% surpassing both New Jersey's state average of 12.2% and the national average of 9.4%, 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 Monmouth County's 126,125 Irish residents constitute 11.1% of New Jersey's total Irish population of 1.1 million, placing the county among jurisdictions with the highest demographic concentrations, with 11.1% of all New Jersey Irish Americans residing within county boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey shows Monmouth County maintains 269.4 Irish Americans per square mile compared to New Jersey's average of 154, indicating higher demographic concentration relative to state averages.
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51 Cities in Monmouth County Ranked by Irish Population

View Methodology
ACS data [1] confirm Irish populations in every incorporated city in the county, with the largest counts in Middletown township, Howell township, Wall township, and Freehold township. The table below provides detailed figures, including total population, density measures, and demographic distributions, based on the current ACS data for all 51 incorporated cities included in this analysis*.
cities in Monmouth County, NJ ranked by Irish population count
Rank by Irish Population
City
Irish Population
% of Total City Population
% of Total Monmouth County Irish Population
5 Year Rank Trend
1 Middletown township 20,255 30.30% 16.06%
2 Howell township 10,863 20.24% 8.61%
3 Wall township 7,385 27.89% 5.86%
4 Freehold township 5,850 16.47% 4.64%
5 Ocean township 5,160 18.57% 4.09%
6 Hazlet township 4,921 24.18% 3.90%
7 Tinton Falls 4,149 21.55% 3.29%
8 4,136 10.17% 3.28%
9 3,774 9.09% 2.99%
10 3,630 12.91% 2.88%
11 3,039 15.77% 2.41%
12 2,971 30.54% 2.36%
13 2,912 9.05% 2.31%
14 2,725 15.66% 2.16%
15 2,323 18.06% 1.84%
16 2,256 38.14% 1.79%
17 2,226 16.44% 1.76%
18 2,224 35.98% 1.76%
19 2,046 42.05% 1.62%
20 2,041 13.39% 1.62%
21 1,958 20.32% 1.55%
22 1,860 18.71% 1.47%
23 1,711 28.07% 1.36%
24 1,671 28.51% 1.32%
25 1,618 28.28% 1.28%
26 1,598 22.08% 1.27%
27 1,539 21.50% 1.22%
28 1,504 20.70% 1.19%
29 1,474 14.24% 1.17%
30 1,470 23.98% 1.17%
31 1,314 15.32% 1.04%
32 1,158 27.82% 0.92%
33 1,102 39.61% 0.87%
34 1,098 22.14% 0.87%
35 1,042 24.44% 0.83%
36 1,025 8.20% 0.81%
37 1,020 23.13% 0.81%
38 998 50.46% 0.79%
39 965 21.09% 0.77%
40 889 27.77% 0.70%
41 805 17.47% 0.64%
42 686 38.09% 0.54%
43 490 29.52% 0.39%
44 479 24.87% 0.38%
45 399 24.08% 0.32%
46 339 24.23% 0.27%
47 287 13.83% 0.23%
48 240 29.23% 0.19%
49 159 15.01% 0.13%
50 147 12.18% 0.12%
51 71 11.23% 0.06%
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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 Monmouth County, NJ 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 Monmouth 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.