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Where 53203 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 53203 into a pocket calculator and turn it upside down: EOZES — not quite a word, sorry.
- ➕ As a number, 53,203 = 83 × 641. Its digits add up to 13, a total 1,179 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1100111111010011 - 🏠 Its numerical neighbours: 53202 (Milwaukee, WI, 1 mi away) and 53204 (Milwaukee, WI, 1 mi away).
- 🔄 Backwards, 53203 becomes 30235, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (03235, 03253, 20533, 23035, 23350, 23503, …). The farthest-flung twin is 33052 in Marathon Shores, FL, 1,324 miles away.
- 🧭 Farther north than 83% of all ZIP codes, and farther west than 50%.
- 🎯595 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 53203 and you would come out at 43.04°S, 92.09°E — 1,128 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 15h 22m of daylight. Shortest: 9h 00m.
- 📏 At 0.444 square miles of land, 53203 is bigger than 5% of ZIP codes — about 215 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 2,357This ZIP2,357 |
|---|---|
| Households | 1,585This ZIP1,585 |
| Housing units | 1,798This ZIP1,798 |
| Median age | 31.6This ZIP31.6Wisconsin40.2US 38.9 |
| Median household income | $86,159This ZIP$86,159Wisconsin$77,485US $80,734 |
| Median gross rent | $1,788This ZIP$1,788Wisconsin$1,087US $1,413 |
| Bachelor's degree or higher | 73.0%This ZIP73.0% |
| Mean commute | 16.7 minThis ZIP16.7 min |
| Population density | 5,308.6 / sq miThis ZIP5,308.6 / sq mi |
Business and tax activity
| Business establishments | 335This ZIP335 |
|---|---|
| Employees | 9,390This ZIP9,390 |
| Annual payroll | $608,701,000This ZIP$608,701,000 |
| Tax returns filed | 1,430This ZIP1,430 |
| Total adjusted gross income | $120,332,000This ZIP$120,332,000 |
Land area
| Land area | 0.44 sq miThis ZIP0.44 sq mi |
|---|---|
| Water area | 0.02 sq miThis ZIP0.02 sq mi |
Other place names in 53203
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 53203
| ZIP | City | Distance |
|---|---|---|
53259 | Milwaukee, WI | 0.1 mi |
53290 | Milwaukee, WI | 0.1 mi |
53268 | Milwaukee, WI | 0.3 mi |
53288 | Milwaukee, WI | 0.3 mi |
53293 | Milwaukee, WI | 0.3 mi |
53201 | Milwaukee, WI | 0.4 mi |
53234 | Milwaukee, WI | 0.4 mi |
53237 | Milwaukee, WI | 0.4 mi |
53274 | Milwaukee, WI | 0.4 mi |
53267 | Milwaukee, WI | 0.5 mi |
Find every ZIP code within 10 miles of 53203 →
Questions about this ZIP code
Where is ZIP code 53203?
53203 is in Milwaukee, Wisconsin, in Milwaukee County, part of the Milwaukee-Waukesha, WI metropolitan area. Its published point location is 43.0381, -87.9145.
What county is 53203 in?
53203 lies in Milwaukee County.
What area code is 53203?
Milwaukee uses area codes 414 and 262, from NANPA's telephone records.
What time zone is 53203 in?
53203 uses America/Chicago.
How many people live in 53203?
About 2,357 people live in ZIP code 53203, in 1,585 households, at 5,308.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 53203?
$86,159 a year, against $77,485 across Wisconsin.
What ZIP codes are near 53203?
The closest are 53259 (0.1 mi), 53290 (0.1 mi), 53268 (0.3 mi), 53288 (0.3 mi) and 53293 (0.3 mi).
Is 53203 a PO Box ZIP code?
53203 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “53203 ZIP Code — Milwaukee, Wisconsin (Milwaukee County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/53203
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/53203.json Underlying data is public domain or openly licensed — sources, vintages and licences.