ZIP Code 55388 — Watertown, MN
55388 is a standard (street delivery) ZIP code serving Watertown, Minnesota, in Carver 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 55388 at a glance
| ZIP code | 55388 |
|---|---|
| Primary city | Watertown |
| State | Minnesota (MN) |
| County | Carver FIPS 27019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 5,893 |
| Coordinates | 44.950000, -93.847290 |
How ZIP+4 works in 55388
The four digits after the hyphen encode a delivery segment inside 55388. 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 55388 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 55388.
| ZIP | City | Distance |
|---|---|---|
| 55360 | Mayer, MN | 4.4 mi |
| 55328 | Delano, MN | 6 mi |
| 55375 | Saint Bonifacius, MN | 6.8 mi |
| 55363 | Montrose, MN | 7.2 mi |
| 55387 | Waconia, MN | 7.3 mi |
| 55367 | New Germany, MN | 7.4 mi |
| 55359 | Maple Plain, MN | 8.1 mi |
| 55364 | Mound, MN | 8.4 mi |
| 55397 | Young America, MN | 10.1 mi |
| 55390 | Waverly, MN | 10.4 mi |
| 55395 | Winsted, MN | 10.4 mi |
| 55384 | Spring Park, MN | 10.6 mi |
Questions about 55388
What is the ZIP+4 code for 55388?
55388 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 55388, you need to look up a specific street address to get them.
What city is 55388?
55388 is assigned to Watertown, Minnesota, in Carver 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.