South Milwaukee, WI Profile: Facts, Map & Data


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South Milwaukee, Wisconsin - Basic Facts

The City of South Milwaukee had a population of 20,861 as of July 1, 2017. South Milwaukee ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Wisconsin. See peer rankings below.

The primary coordinate point for South Milwaukee is located at latitude 42.9126 and longitude -87.8623 in Milwaukee County. The formal boundaries for the City of South Milwaukee (see map below) encompass a land area of 4.8 sq. miles and a water area of 0.01 sq. miles. Milwaukee County is in the Central time zone (GMT -6). The elevation is 666 feet.

The City of South Milwaukee (GNIS ID: 1584179) has a C5 Census Class Code which indicates an active incorporated place that is independent of any county subdivision and serves as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Beneath the boundary map are tables with South Milwaukee population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for South Milwaukee: Oak Creek.

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City of South Milwaukee, WI Boundary Map

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South Milwaukee, WI Data & Demographics (As of July 1, 2017)


Total Population 20,861
Daytime Population: Workers 5,324
Daytime Population: Residents 10,164
Total Daytime Population (TDP) 15,488
Ratio TDP/Total Population1 0.74
Population in Households 20,592
Population in Familes 15,739
Population in Group Qrtrs 269
Population Density2 4,347
Diversity Index3 35


Median Household Income $56,866
Average Household Income $68,668
Per Capita Income $29,386


Total Housing Units 9,769 (100%)
Owner Occupied HU 4,976 (50.9%)
Renter Occupied HU 3,882 (39.7%)
Vacant Housing Units 911 ( 9.3%)
Median Home Value $173,441
Average Home Value $180,527


Total Households 8,858
Average Household Size 2.32
Family Households 5,346
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population -0.19% -0.03%
Households -0.28% -0.1%
Families -0.33% -0.14%
Median Household Income   2.72%
Per Capita Income   2.84%

South Milwaukee, WI - Peer Comparisons by Rank and Percentile

The table below compares South Milwaukee to the other 774 incorporated cities, towns and CDPs in Wisconsin by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 37 95th
Population Density # 6 99th
Diversity Index # 94 88th
Median Household Income # 317 59th
Per Capita Income # 269 65th

Additional comparisons and rankings can be made with a VERY EASY TO USE Wisconsin Census Data Comparison Tool.

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