Ozaukee County, WI ZIP codes
There are 8 ZIP codes in Ozaukee County, WI, in 7 towns, from 53004 to 53097. The largest are 53092 (Mequon), 53012 (Cedarburg) and 53024 (Grafton).
The county seat is Port Washington.
- ZIP codes
- 8
- Towns
- 7
- County seat
- Port Washington
- County FIPS
55089- State
- Wisconsin
- Population
- 92,966
- Median household income
- $96,996
- Land area
- 233 sq mi
- Area code
- 262
- Metro area
- Milwaukee-Waukesha
Ozaukee County ZIP codes by town
- Port Washington (county seat)
- 53074
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Ozaukee County ZIP codes
The ZIP codes of Ozaukee County, 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.
Ozaukee County in numbers
About 92,966 people live in Ozaukee County, in 38,309 households, the 18th most populous of Wisconsin's 72 counties. The median household income is $96,996 a year, 25% above the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $390,200 (46% above the Wisconsin median), and median gross rent is $1,154 a month. The median age is 43.9; 51.2% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 23 minutes.
| Population | 92,966 |
|---|---|
| Households | 38,309 |
| Median age | 43.9 |
| Median household income | $96,996 |
| Median home value | $390,200 |
| Median gross rent | $1,154 |
| Bachelor's degree or higher | 51.2% |
| Mean commute | 22.8 min |
| Population density | 399 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Ozaukee County
| Town | ZIP codes | Population |
|---|---|---|
| Mequon | 2 | 25,270 |
| Port Washington | 1 | 12,645 |
| Cedarburg | 1 | 12,605 |
| Grafton | 1 | 12,445 |
| Saukville | 1 | 4,267 |
| Belgium | 1 | 2,488 |
| Fredonia | 1 | 2,448 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Ozaukee County.
Not sure you are in Ozaukee County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Ozaukee County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
53004 | Belgium , WI | Standard | 3,475 | $84,821 | $256,000 |
53012 | Cedarburg , WI | Standard | 19,183 | $96,090 | $422,700 |
53021 | Fredonia , WI | Standard | 4,537 | $89,779 | $315,800 |
53024 | Grafton , WI | Standard | 18,982 | $92,390 | $366,300 |
53074 | Port Washington , WI | Standard | 13,682 | $79,423 | $296,600 |
53080 | Saukville , WI | Standard | 5,059 | $80,360 | $313,500 |
53092 | Mequon , WI | Standard | 20,886 | $128,156 | $473,300 |
53097 | Mequon , WI | Standard | 7,683 | $135,929 | $499,800 |
Cite this page
zipcodes.pro. “Ozaukee County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wi/county/ozaukee
Underlying data is public domain or openly licensed — sources, vintages and licences.