53172 ZIP Code, South Milwaukee, WI
53172 is a ZIP code in South Milwaukee, Wisconsin in Milwaukee County. It covers 4.8 square miles of land. The closest ZIP codes are 53110, 53154 and 53235. 20,442 people live here in 8,420 households. At about 4,236 people per square mile it is built up to city-neighborhood density, and owners and renters are mixed (67% own). Median household income is $73,427, close to the Wisconsin median of $77,485.
Quick facts
- Mailing city: South Milwaukee, WI
- County: Milwaukee County
- Land area: 4.8 sq mi
- Population: 20,442
- Median household income: $73,427
- Carrier routes: 13 (9,058 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 20,442 |
| Households | 8,420 |
| Median household income | $73,427 |
| Income per person | $36,937 |
| Median age | 40.2 |
| Homeowners | 66.8% |
| Median home value | $235,700 |
| Median rent | $1,014 |
| Bachelor's degree or higher | 29.9% |
| Average commute (minutes) | 24.2 |
| Households with kids under 18 | 27.9% |
| Moved in the past year | 10.1% |
| Below the poverty line | 13.1% |
| Broadband internet | 94.6% |
| Speak a non-English language at home | 13.9% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.7% |
| $10–15K | 3.3% |
| $15–25K | 7.8% |
| $25–35K | 5.1% |
| $35–50K | 13.5% |
| $50–75K | 17.5% |
| $75–100K | 15.9% |
| $100–150K | 19.5% |
| $150–200K | 7.6% |
| $200K+ | 6.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.5% |
| 10–19 | 11.1% |
| 20–24 | 3.7% |
| 25–34 | 16.9% |
| 35–44 | 11.6% |
| 45–54 | 11.8% |
| 55–64 | 13.6% |
| 65–74 | 11.9% |
| 75+ | 7.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 41.1% |
| Owned outright | 22.7% |
| Rented | 31.1% |
| Vacant | 5.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 59.1% |
| Townhome | 5.3% |
| 2–4 units | 15.5% |
| 5–19 units | 13.9% |
| 20+ units | 6.1% |
| Mobile / other | 0.2% |
Businesses in 53172
260 business establishments with 3,491 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 48
- Accommodation and Food Services: 40
- Retail Trade: 29
- Construction: 28
- Other Services (except Public Administration): 25
- Manufacturing: 16
- Professional, Scientific, and Technical Services: 15
- Administrative and Support and Waste Management and Remediation Services: 15
EDDM carrier routes
53172 has 13 USPS carrier routes with 9,058 residential and 303 business mailboxes. Open the EDDM route map.
Carrier routes in 53172
53172 has 13 USPS carrier routes (13 city (C)) with 9,058 residential and 303 business mailboxes. Routes range from 545 homes (C007) to 947 homes (C011); the median route has 696 homes. The Census counted 8,420 households in 53172 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 11 |
| 750–999 | 2 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 53172 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C007 — USPS business mailboxes 59, 545 homes
- Route C002 — USPS business mailboxes 57, 711 homes
- Route C010 — USPS business mailboxes 47, 639 homes
- Route C015 — USPS business mailboxes 38, 673 homes
- Route C004 — USPS business mailboxes 20, 664 homes
Select these 5 routes on the route map
Every carrier route in 53172
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 696 | 5 | $72,597 | — | — | — |
| C002 | City | 711 | 57 | $54,957 | — | — | — |
| C003 | City | 567 | 13 | $90,859 | — | — | — |
| C004 | City | 664 | 20 | $90,859 | — | — | — |
| C006 | City | 743 | 7 | $105,728 | — | — | — |
| C007 | City | 545 | 59 | $81,191 | — | — | — |
| C008 | City | 643 | 12 | $55,606 | — | — | — |
| C009 | City | 718 | 13 | $81,191 | — | — | — |
| C010 | City | 639 | 47 | $75,344 | — | — | — |
| C011 | City | 947 | 12 | $80,375 | — | — | — |
| C012 | City | 787 | 19 | $105,728 | — | — | — |
| C013 | City | 725 | 1 | $115,575 | — | — | — |
| C015 | City | 673 | 38 | $98,707 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 53172 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 53110 — Cudahy city, WI (2.7 mi)
- 53154 — Oak Creek city, WI (3 mi)
- 53235 — St. Francis city, WI (4.2 mi)
- 53207 — Milwaukee city, WI (4.8 mi)
- 53221 — Milwaukee city, WI (5.1 mi)
- 53129 — Greendale village, WI (7.4 mi)
- 53215 — Milwaukee city, WI (7.4 mi)
- 53220 — Greenfield city, WI (7.6 mi)
Areas that include 53172
- South Milwaukee, WI ZIP codes — 1 ZIP code
- Milwaukee County ZIP codes — 36 ZIP codes
- Wisconsin ZIP code data
Where it ranks
- No. 5 of 35: highest share of owner-occupied homes in Milwaukee County
- No. 7 of 35: highest median age in Milwaukee County
Mail every home in 53172
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 53172, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 53172 in?
- 53172 is a South Milwaukee, WI mailing address. By land area, 100% lies inside South Milwaukee.
- What county is 53172 in?
- 53172 is in Milwaukee County.
- What is the population of 53172?
- About 20,442 people (±49), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,795.
- What is the median household income in 53172?
- $73,427 (±$6,759), compared with $77,485 for Wisconsin as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 53172?
- 13 USPS carrier routes with 9,058 residential and 303 business mailboxes (9,361 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 53172?
- The closest, measured center to center: 53110 (2.7 mi, Cudahy), 53154 (3 mi, Oak Creek), 53235 (4.2 mi, St. Francis), 53207 (4.8 mi, Milwaukee), 53221 (5.1 mi, Milwaukee) and 53129 (7.4 mi, Greendale).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.