ZIP code · South Milwaukee · Wisconsin · United States

ZIP code 53172 — South Milwaukee

ZIP code 53172 serves South Milwaukee, Wisconsin.

Postal code
53172
Single source Value from one source, not cross-checked.
City
South Milwaukee
County
Milwaukee FIPS 55079
State
Wisconsin
Country
United States
Coordinates
42.9105, -87.8646 — precision precise (locality)
View on OpenStreetMap
Population
20,547 (ZCTA, ACS 5-year)
Population density
4,254 / sq mi
Land area
4.8 sq mi (12.5 km²) (ZCTA, ACS 5-year)
Median household income
$70,146
Per-capita income
$36,428
Median age
40.9
Households
8,679
Housing units
9,150
Median home value
$216,400
Median gross rent
$1,014 / month
Congressional district
WI-1 (119th Congress)
USDA hardiness zone
6a (-10 to -5 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
262 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 80°F), coldest Jan (avg low 16°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F303342536475807973614836
Avg low °F161828374757656456443322
Precip in1.61.82.24.14.24.63.53.83.33.42.11.9

NOAA 1991–2020 climate normals from the nearest station: SOUTH MILWAUKEE WWTP (1.0 mi) · NOAA NCEI

Places in ZIP 53172

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page