2025

Cities in Rock County, WI ranked by White Population

This list ranks the 31 cities in Rock County based on their White population, as estimated by the United States Census Bureau. It also highlights population changes in these cities over the past five years.
Updated Jan 24, 2025

Top 5 cities with the largest White population in Rock County

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  • 1
    Janesville
    White population in Janesville is 60,760
    87.25% of Janesville population is White
  • 2
    Beloit
    White population in Beloit is 27,842
    65.44% of Beloit population is White
  • 3
    Beloit town
    White population in Beloit town is 7,188
    83.79% of Beloit town population is White
  • 4
    Milton
    White population in Milton is 5,682
    91.39% of Milton population is White
  • 5
    Evansville
    White population in Evansville is 5,608
    95.54% of Evansville population is White

List of 31 cities in Rock County, WI by White Population

View Methodology
Rank by White Population
City
White Population
% of Total City Population
% of Total Rock County White Population
5 Year Rank Trend
1 Janesville 60,760 87.25% 40.24%
2 Beloit 27,842 65.44% 18.44%
3 Beloit town 7,188 83.79% 4.76%
4 Milton 5,682 91.39% 3.76%
5 Evansville 5,608 95.54% 3.71%
6 Edgerton 5,349 42.37% 3.54%
6 Edgerton 5,349 42.37% 3.54%
7 3,638 89.58% 2.41%
8 3,514 96.25% 2.33%
9 3,109 47.90% 2.06%
9 3,109 47.90% 2.06%
10 3,040 86.73% 2.01%
11 2,747 91.08% 1.82%
12 2,533 89.03% 1.68%
13 2,198 81.17% 1.46%
14 2,178 96.71% 1.44%
15 1,972 93.15% 1.31%
16 1,561 92.42% 1.03%
17 1,312 91.49% 0.87%
18 1,310 81.06% 0.87%
19 1,099 91.13% 0.73%
20 1,055 95.39% 0.70%
21 1,028 91.95% 0.68%
22 918 97.87% 0.61%
23 903 96.47% 0.60%
24 864 93.30% 0.57%
25 841 85.55% 0.56%
26 736 91.66% 0.49%
27 678 96.58% 0.45%
28 671 98.68% 0.44%
29 646 93.22% 0.43%

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 cities in Rock County, WI by their White population, using the most recent ACS data available.

How the Census Defines White Population

The U.S. Census Bureau allows people to self-identify their race, meaning individuals can choose one or more racial categories when responding to the survey. In this ranking, we include everyone who identifies as White, whether alone or in combination with another race.
Here are a few important things to know about how race is reported:
  • Some people identify as White alone, while others identify as White along with another race (such as White and White).
  • Hispanic / Latino origin is reported separately from race, so someone can be both Hispanic and White .
  • We’ve used the “White alone or in combination” category unless noted otherwise, which gives a broader picture of the White population in each area.

How We Ranked the Data

This ranking is based on the total number of people who identified as White alone or in combination in cities. 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 White .
  2. % of Total Rock County White Population – This tells us how much of the entire U.S. White 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 White 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.
  • Cities that don’t have any reported White 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 White populations are most concentrated while keeping the numbers easy to understand.

Sources

U.S. Census Bureau American Community Survey (ACS) 2019-2023 5-Year Estimates.