City in Milwaukee County, Wisconsin · 4.8 sq mi · 4,155 people per sq mi
20,053 people live in South Milwaukee. The typical household earns $73,427, and the median resident is 40.2 years old.
2026 projection
From 20,795 in 2020
Poverty rate 13.06%
Men 38.9 · Women 40.8
1900–2026
20,053
2026 projection
3.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1900–2026
20,053
2026 projection
3.6% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 20,053 | -138 | 0.68% |
|---|---|---|---|
| 2025 | 20,191 | -32 | 0.16% |
| 2024 | 20,223 | -12 | 0.06% |
| 2023 | 20,235 | -103 | 0.51% |
| 2022 | 20,338 | -236 | 1.15% |
| 2021 | 20,574 | -221 | 1.06% |
| 2020 | 20,795 | -20 | 0.10% |
| 2019 | 20,815 | -68 | 0.33% |
| 2018 | 20,883 | -130 | 0.62% |
| 2017 | 21,013 | -179 | 0.84% |
Showing 10 of 28 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
South Milwaukee has a population change lower than Milwaukee County, Wisconsin, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 204 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 8 residents
49% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 49% | 49% | 48% |
| Never married | 34% | 37% | 31% |
| Divorced | 11% | 10% | 12% |
| Widowed | 6% | 3% | 8% |
| Separated | <1% | <1% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources