ZIP Code 54102 — Amberg, WI
54102 is a standard (street delivery) ZIP code serving Amberg, Wisconsin, in Marinette 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 54102 at a glance
| ZIP code | 54102 |
|---|---|
| Primary city | Amberg |
| State | Wisconsin (WI) |
| County | Marinette FIPS 55075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 763 |
| Coordinates | 45.502780, -88.005240 |
How ZIP+4 works in 54102
The four digits after the hyphen encode a delivery segment inside 54102. 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 54102 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 54102.
| ZIP | City | Distance |
|---|---|---|
| 54156 | Pembine, WI | 7.5 mi |
| 54177 | Wausaukee, WI | 11 mi |
| 54119 | Dunbar, WI | 12 mi |
| 54104 | Athelstane, WI | 13.3 mi |
| 54151 | Niagara, WI | 15.2 mi |
| 49821 | Daggett, MI | 18.2 mi |
| 54114 | Crivitz, WI | 18.2 mi |
| 54125 | Goodman, WI | 19.2 mi |
| 49848 | Ingalls, MI | 19.8 mi |
| 49876 | Quinnesec, MI | 20.7 mi |
| 49802 | Kingsford, MI | 20.8 mi |
| 49852 | Loretto, MI | 21.4 mi |
Questions about 54102
What is the ZIP+4 code for 54102?
54102 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 54102, you need to look up a specific street address to get them.
What city is 54102?
54102 is assigned to Amberg, Wisconsin, in Marinette 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.