South Milwaukee, Wisconsin Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of South Milwaukee, Wisconsin is 20,547 as of the 2023 American Community Survey, making it the 40th-largest city in Wisconsin. The median household income is $70,146, the median home value is $216,400, and the median age is 40.9.
The population has declined 4.4% since 2010 (21,163 → 20,233).
20,547
Population
4258
People / sq mi
$70,146
Median Income
$216,400
Median Home Value
South Milwaukee covers 4.8 sq mi of land at 4258 people per square mile.
About South Milwaukee, WI
South Milwaukee is a city in Wisconsin with a population of 20,547. It ranks #40 among cities in Wisconsin by population. The median age is 40.9, older than the national median. The population is 49.6% male and 50.4% female.
The median household income in South Milwaukee is $70,146, below the US median of $74,580. 9.6% of residents live below the federal poverty level. Home values sit at a median of $216,400, with monthly rent averaging $1,014. The homeownership rate of 66.8% is close to the national rate of 64.8%.
Educational attainment in South Milwaukee reflects 27.7% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.4% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 25.0 minutes each way.
South Milwaukee city Population History (2010-2024)
The city of South Milwaukee city had a population of 21,163 in 2010 and 20,233 in 2024, a -4.4% growth over 14 years. The peak was 21,279 in 2014. Average annual growth rate: -0.32%.
20,233
Population (2024)
21,163
Population (2010)
21,279
Peak (2014)
-0.32%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 21,163 |
| 2011 | 21,181 |
| 2012 | 21,221 |
| 2013 | 21,260 |
| 2014 | 21,279 |
| 2015 | 21,252 |
| 2016 | 21,123 |
| 2017 | 20,928 |
| 2018 | 20,781 |
| 2019 | 20,696 |
| 2020 | 20,772 |
| 2021 | 20,567 |
| 2022 | 20,347 |
| 2023 | 20,238 |
| 2024 | 20,233 |
Race & Ethnicity
| White | 84.4% |
| Black or African American | 2.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.9% |
| Two or More Races | 0.0% |
Economy & Income
$70,146
Median Household Income
$36,428
Per Capita Income
9.6%
Poverty Rate
2.2%
Unemployment Rate
Housing
$216,400
Median Home Value
$1,014
Median Rent
66.8%
Owner-Occupied
Education
93.8%
High School+
27.7%
Bachelor's+
Commute
1.0%
Drive Alone
78.2%
Public Transit
11.4%
Work From Home
25.0 min
Avg Commute
Community Profile
14.3%
Foreign Born
88.3%
Non-English at Home
7.6%
Veterans
14.4%
With Disability
95.2%
Health Insurance
94.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.0% |
| Manufacturing | 22.2% |
| Finance, Insurance & Real Estate | 8.9% |
| Education, Health Care & Social Services | 7.1% |
| Information | 6.1% |
| Retail Trade | 5.9% |
| Construction | 5.0% |
| Arts, Entertainment & Food Services | 4.0% |
| Public Administration | 2.7% |
| Transportation & Warehousing | 1.4% |
| Agriculture & Mining | 0.3% |
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City rankings
Frequently Asked Questions
South Milwaukee, Wisconsin has a population of 20,547 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 40th-largest city in Wisconsin.
The median household income in South Milwaukee, Wisconsin is $70,146, with 9.6% of residents living below the federal poverty level.
The median home value in South Milwaukee, Wisconsin is $216,400, with median monthly rent at $1,014 and a homeownership rate of 66.8%.
The median age in South Milwaukee, Wisconsin is 40.9 years. The population is 49.6% male and 50.4% female.
The population has declined 4.4% since 2010 (21,163 → 20,233).
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.