ZIP Code 54235 — Sturgeon Bay, WI
54235 is a standard (street delivery) ZIP code serving Sturgeon Bay, Wisconsin, in Door County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 54235 at a glance
| ZIP code | 54235 |
|---|---|
| Primary city | Sturgeon Bay |
| State | Wisconsin (WI) |
| County | Door FIPS 55029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 17,749 |
| Coordinates | 44.842180, -87.376770 |
How ZIP+4 works in 54235
The four digits after the hyphen encode a delivery segment inside 54235. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 54235 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 54235.
| ZIP | City | Distance |
|---|---|---|
| 54213 | Forestville, WI | 12.1 mi |
| 54209 | Egg Harbor, WI | 12.7 mi |
| 54204 | Brussels, WI | 12.9 mi |
| 54201 | Algoma, WI | 16.4 mi |
| 54202 | Baileys Harbor, WI | 20 mi |
| 54205 | Casco, WI | 20.5 mi |
| 54212 | Fish Creek, WI | 20.6 mi |
| 54143 | Marinette, WI | 23.2 mi |
| 54211 | Ephraim, WI | 24.2 mi |
| 54157 | Peshtigo, WI | 25.7 mi |
| 54217 | Luxemburg, WI | 26.3 mi |
| 54153 | Oconto, WI | 27.1 mi |
Questions about 54235
What is the ZIP+4 code for 54235?
54235 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 54235, you need to look up a specific street address to get them.
What city is 54235?
54235 is assigned to Sturgeon Bay, Wisconsin, in Door County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.