Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/WI/SOUTH-MILWAUKEE

South Milwaukee ZIP code, Wisconsin

The ZIP code for South Milwaukee, WI is 53172, and its area codes are 414 and 262.

USPS city name
1 ZIP code
Population
20,442
Area codes
414, 262

NANPA lists no telephone rate centre for South Milwaukee itself, so these are the area codes of the nearest one, Milwaukee (4.8 miles). A town on an area-code boundary can differ from its neighbour.

South Milwaukee in numbers

About 20,442 people live in South Milwaukee, in 8,420 households, the 41st-largest of Wisconsin's 805 census places. The median household income is $73,427 a year, 5% below the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $235,700 (12% below the Wisconsin median), and median gross rent is $1,014 a month. The median age is 40.2; 29.9% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 24 minutes.

Population20,442South Milwaukee20,442
Households8,420South Milwaukee8,420
Median age40.2South Milwaukee40.2Wisconsin40.2US 38.9
Median household income$73,427South Milwaukee$73,427Wisconsin$77,485US $80,734
Median home value$235,700South Milwaukee$235,700Wisconsin$266,500US $332,700
Median gross rent$1,014South Milwaukee$1,014Wisconsin$1,087US $1,413
Bachelor's degree or higher29.9%South Milwaukee29.9%Wisconsin33.4%US 35.7%
Mean commute24.2 minSouth Milwaukee24.2 minWisconsin22.2 minUS 26.4 min
Population density4,236 / sq miSouth Milwaukee4,236 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place South Milwaukee city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as South Milwaukee

ZIP codes with the USPS city name South Milwaukee
ZIP City Type Population Median income Median home
53172 South Milwaukee , WI Standard 20,442 $73,427 $235,700

Map of South Milwaukee ZIP codes

53172

The ZIP codes of South Milwaukee, WI, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near South Milwaukee

The nearest larger towns are Oak Creek (37,325 people, 3.0 mi), Franklin (35,886 people, 7.8 mi) and Greenfield (37,345 people, 8.0 mi).

Towns near South Milwaukee
TownPopulationDistance
Cudahy 17,853 2.4 mi
Oak Creek 37,325 3.0 mi
St. Francis 9,004 4.1 mi
Greendale 14,594 7.3 mi
Franklin 35,886 7.8 mi
Greenfield 37,345 8.0 mi
Caledonia 25,257 8.0 mi
West Milwaukee 4,038 8.8 mi
Hales Corners 7,689 9.7 mi
West Allis 59,612 10.7 mi
Raymond 3,945 10.9 mi
Milwaukee 566,973 11.7 mi
Shorewood 13,627 12.4 mi
Racine 77,633 13.2 mi

More nearby: every ZIP code in Milwaukee County · Wisconsin ZIP codes

Cite this page

zipcodes.pro. “South Milwaukee, WI ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wi/south-milwaukee

Underlying data is public domain or openly licensed — sources, vintages and licences.