Residential delivery area · Wisconsin
ZIP Code 53172: South Milwaukee, WI
ZIP code 53172 is in South Milwaukee, Wisconsin, entirely in Milwaukee County (Census 2020 ZIP-county file). About 20,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $73,427 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- South Milwaukee · its only residential ZIP
- County
- Milwaukee County
- Census places
- South Milwaukee
- Metro area
- Milwaukee-Waukesha, WI
- House district
- WI-1 119th Congress
- State
- Wisconsin
- Time zone
- Central
- Land area
- 4.8 sq mi · 4,236 people per sq mi
Where is ZIP code 53172?
53172 centers on 42.912°, -87.860° and covers 4.8 square miles of land plus 0.8 of water. It borders 2 ZIP codes: 53110, 53154.
The map draws ZIP code areas only. For the streets inside 53172, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 53172 compare with the rest of Milwaukee County?
| Measure | 53172 | In Milwaukee County | In WI |
|---|---|---|---|
| People (ACS 2020-2024) | 20,442 | 25th of 36 | 103rd of 783 |
| Median household income | $73k | 13th of 35 | 366th of 610 |
| Median home value | $236k | 12th of 32 | 325th of 612 |
Its median household income is higher than in 52% of U.S. residential ZIP codes, and it is denser than 92% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 53172?
The 2020 Census counted 20,795 people in 53172; the ACS, which samples households over 2020-2024, estimates 20,442. Between the 2010 and 2020 censuses its population fell 1.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 20,442
- 2020 Census count
- 20,795−1.7% since 2010 (21,156)
- Households
- 8,420
- Median age
- 40.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 53172?
Of the 20,442 people the ACS estimates in 53172, 22.2% are under 18 and 18.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (77.2%), then Hispanic or Latino (12.2%).
- Under 1822.2%
- 18 to 6459.0%
- 65 and older18.9%
- White, not Hispanic77.2%
- Hispanic or Latino12.2%
- Other or two or more6.8%
- Black, not Hispanic2.5%
- Asian, not Hispanic1.3%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 53172 earn?
Median household income is $73,427 (ACS 2020-2024), the 13th highest of the 35 ranked ZIP codes in Milwaukee County. It rose from $64,635 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $73,427
- Income per person
- $36,937
- Below the poverty line
- 13.1%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 29.9%
- Adjusted gross income per tax return, 2022
- $61,77810,280 returns; wages 76% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 53172?
FHFA's house price index for 53172, built from repeat sales and appraisals of the same homes, rose 103% from 2015 to 2025 and rose 59% from 2020 to 2025, and moved +6.6% in 2025.
- Median home value (owners' estimate)
- $235,700
- Median gross rent
- $1,014
- Homes owned by their occupants
- 66.8%
- Housing units
- 8,885
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 53172?
260 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance48
- Accommodation and food services40
- Retail trade29
- Construction28
- Other services (except public administration)25
- Manufacturing16
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 53172?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 53110 | Cudahy | 17,853 | $67k | 2.7 mi |
| 53154 | Oak Creek | 37,325 | $97k | 3.0 mi |
| 53235 | Saint Francis | 9,004 | $57k | 4.2 mi (near) |
| 53207 | Milwaukee | 34,313 | $79k | 4.8 mi (near) |
| 53221 | Milwaukee | 38,044 | $63k | 5.1 mi (near) |
| 53215 | Milwaukee | 58,146 | $54k | 7.4 mi (near) |
| 53129 | Greendale | 14,570 | $95k | 7.4 mi (near) |
| 53220 | Milwaukee | 27,782 | $69k | 7.6 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.