ZIP Code 55303 — Anoka, MN
55303 is a standard (street delivery) ZIP code serving Anoka, Minnesota, in Anoka 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 55303 at a glance
| ZIP code | 55303 |
|---|---|
| Primary city | Anoka |
| State | Minnesota (MN) |
| County | Anoka FIPS 27003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 52,614 |
| Coordinates | 45.288720, -93.423330 |
How ZIP+4 works in 55303
The four digits after the hyphen encode a delivery segment inside 55303. 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 55303 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 55303.
| ZIP | City | Distance |
|---|---|---|
| 55327 | Dayton, MN | 6.7 mi |
| 55330 | Elk River, MN | 7.7 mi |
| 55304 | Andover, MN | 8 mi |
| 55316 | Champlin, MN | 8.3 mi |
| 55070 | Saint Francis, MN | 8.9 mi |
| 55448 | Minneapolis, MN | 9 mi |
| 55011 | Cedar, MN | 9.1 mi |
| 55433 | Minneapolis, MN | 10.2 mi |
| 55374 | Rogers, MN | 10.8 mi |
| 55369 | Osseo, MN | 11.1 mi |
| 55445 | Minneapolis, MN | 11.6 mi |
| 55434 | Minneapolis, MN | 11.8 mi |
Questions about 55303
What is the ZIP+4 code for 55303?
55303 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 55303, you need to look up a specific street address to get them.
What city is 55303?
55303 is assigned to Anoka, Minnesota, in Anoka 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.