Mexican Population in Milwaukee County, WI by City : 2025 Ranking & Insights

The Mexican population in Milwaukee County, WI is recorded at 101,226 residents, based on the latest U.S. Census estimates. Every city in Milwaukee County reports some Mexican residents. With no unincorporated share evident in the totals, this points to a completely city-based population. The sections below explores how Mexican residents are distributed in Wisconsin and the U.S.

Top 5 cities with the largest Mexican population in Milwaukee County

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  • 1
    Milwaukee
    Mexican population in Milwaukee is 77,838
    13.66% of Milwaukee population is Mexican
  • 2
    West Allis
    Mexican population in West Allis is 6,525
    10.95% of West Allis population is Mexican
  • 3
    Oak Creek
    Mexican population in Oak Creek is 3,511
    9.63% of Oak Creek population is Mexican
  • 4
    Greenfield
    Mexican population in Greenfield is 3,489
    9.34% of Greenfield population is Mexican
  • 5
    South Milwaukee
    Mexican population in South Milwaukee is 1,683
    8.19% of South Milwaukee population is Mexican

Overview of Mexican population in Milwaukee County

  • Population Count and Percentage: American Community Survey data document Milwaukee County with 101,226 Mexican residents (10.9% of 927,656 total county population), placing the jurisdiction at the 98th percentile nationally among counties and 98th percentile within Wisconsin for Mexican population density, with demographic concentrations among the highest nationwide.
  • Comparison to State and National Averages: Census Bureau's ACS indicate Milwaukee County's Mexican population of 10.9% exceeds Wisconsin's state average of 5.4% while remaining below the national average of 11.3%, placing the county above regional demographic benchmarks while below national concentration levels.
  • Share of Total State Population: Official American Community Survey indicate Milwaukee County's 101,226 Mexican residents constitute 32.1% of Wisconsin's total Mexican population of 315,251, placing the county among jurisdictions with the highest demographic concentrations, with 32.1% of all Wisconsin Mexican Americans residing within county boundaries.
  • Population Density per Square Mile: U.S. Census Bureau's American Community Survey indicate Milwaukee County contains $dem_per_sqmi Mexican Americans per square mile—exactly seventy-two times Wisconsin's average of 5.8 per square mile—placing the county as a demographic outlier with one of the most concentrated Mexican communities documented in United States demographic research.
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19 Cities in Milwaukee County Ranked by Mexican Population

View Methodology
ACS data [1] confirm Mexican populations in every incorporated city in the county, with the largest counts in Milwaukee, West Allis, Oak Creek, and Greenfield. The table below provides detailed figures, including total population, density measures, and demographic distributions, based on the current ACS data for all 19 incorporated cities included in this analysis*.
cities in Milwaukee County, WI ranked by Mexican population count
Rank by Mexican Population
City
Mexican Population
% of Total City Population
% of Total Milwaukee County Mexican Population
5 Year Rank Trend
1 Milwaukee 77,838 13.66% 76.90%
2 West Allis 6,525 10.95% 6.45%
3 Oak Creek 3,511 9.63% 3.47%
4 Greenfield 3,489 9.34% 3.45%
5 South Milwaukee 1,683 8.19% 1.66%
6 Franklin 1,643 4.60% 1.62%
7 Wauwatosa 1,284 2.69% 1.27%
8 1,025 25.22% 1.01%
9 972 10.43% 0.96%
10 895 4.98% 0.88%
11 663 4.52% 0.66%
12 427 3.25% 0.42%
13 398 5.22% 0.39%
14 308 2.09% 0.30%
15 248 1.81% 0.25%
16 194 1.54% 0.19%
17 62 0.92% 0.06%
18 36 0.82% 0.04%
19 25 1.53% 0.02%
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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 Milwaukee County, WI by their Mexican population, using the most recent ACS data available.

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

How We Ranked the Data

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

Sources

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