ZIP Code 55603 — Finland, MN
55603 is a standard (street delivery) ZIP code serving Finland, Minnesota, in Lake 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 55603 at a glance
| ZIP code | 55603 |
|---|---|
| Primary city | Finland |
| State | Minnesota (MN) |
| County | Lake FIPS 27075 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 490 |
| Coordinates | 47.544100, -91.194410 |
How ZIP+4 works in 55603
The four digits after the hyphen encode a delivery segment inside 55603. 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 55603 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 55603.
| ZIP | City | Distance |
|---|---|---|
| 55613 | Schroeder, MN | 10.5 mi |
| 55614 | Silver Bay, MN | 15.8 mi |
| 55607 | Isabella, MN | 16 mi |
| 55615 | Tofte, MN | 20.3 mi |
| 55601 | Beaver Bay, MN | 22.8 mi |
| 55612 | Lutsen, MN | 28 mi |
| 55616 | Two Harbors, MN | 30 mi |
| 55731 | Ely, MN | 40.1 mi |
Questions about 55603
What is the ZIP+4 code for 55603?
55603 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 55603, you need to look up a specific street address to get them.
What city is 55603?
55603 is assigned to Finland, Minnesota, in Lake 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.