Puerto Rican Population in Rock Island County, IL by City : 2025 Ranking & Insights

The Puerto Rican population in Rock Island County, IL is reported at 611 residents, according to recent U.S. Census estimates. Several cities in Rock Island County - including East Moline, Rock Island, Moline, and others - contribute to the Puerto Rican population, but the total county figure of 611 indicates additional presence beyond municipal borders. The sections below explores how Puerto Rican residents are distributed in Illinois and the U.S.

Top 5 cities with the largest Puerto Rican population in Rock Island County

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  • 1
    East Moline
    Puerto Rican population in East Moline is 183
    0.88% of East Moline population is Puerto Rican
  • 2
    Rock Island
    Puerto Rican population in Rock Island is 156
    0.42% of Rock Island population is Puerto Rican
  • 3
    Moline
    Puerto Rican population in Moline is 126
    0.30% of Moline population is Puerto Rican
  • 4
    Milan
    Puerto Rican population in Milan is 98
    1.95% of Milan population is Puerto Rican
  • 5
    Silvis
    Puerto Rican population in Silvis is 19
    0.24% of Silvis population is Puerto Rican

Overview of Puerto Rican population in Rock Island County

  • Population Count and Percentage: American Community Survey data document Rock Island County with 611 Puerto Rican residents (0.43% of 142,995 total county population), positioning the jurisdiction at the 79th percentile nationally among counties and 82nd percentile within Illinois for Puerto Rican population concentrations, despite absolute population figures.
  • Comparison to State and National Averages: Census Bureau's ACS data indicate Rock Island County's Puerto Rican population of 0.43% remains below Illinois's state average of 1.7% and the national average of 1.8%, placing the county below demographic benchmarks across multiple geographic scales.
  • Share of Total State Population: Official American Community Survey data indicates Rock Island County contains 611 Puerto Rican residents, representing less than 1% of Illinois's total Puerto Rican population of 212,170.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey indicate Rock Island County's density of 1.4 Puerto Ricans per square mile remains below Illinois's average of 3.8 per square mile, with relatively sparse community distribution compared to state demographic concentrations.
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12 Cities in Rock Island County Ranked by Puerto Rican Population

View Methodology
ACS data [1] show Puerto Rican populations distributed across multiple cities in the county, led by East Moline, Rock Island, Moline, and Milan. The table below provides additional context, including total population, population density, and demographic distributions, based on current ACS data for 12 incorporated cities included in this analysis*.
cities in Rock Island County, IL ranked by Puerto Rican population count
Rank by Puerto Rican Population
City
Puerto Rican Population
% of Total City Population
% of Total Rock Island County Puerto Rican Population
5 Year Rank Trend
1 East Moline 183 0.88% 29.95%
2 Rock Island 156 0.42% 25.53%
3 Moline 126 0.30% 20.62%
4 Milan 98 1.95% 16.04%
5 Silvis 19 0.24% 3.11%
6 Coal Valley 9 0.22% 1.47%
7 Carbon Cliff 4 0.18% 0.65%
8 0 - -
8 0 - -
8 0 - -
8 0 - -
8 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 Rock Island County, IL by their Puerto Rican population, using the most recent ACS data available.

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

How We Ranked the Data

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

Sources

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