ZIP Code 58620 — Amidon, ND
58620 is a standard (street delivery) ZIP code serving Amidon, North Dakota, in Slope 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 58620 at a glance
| ZIP code | 58620 |
|---|---|
| Primary city | Amidon |
| State | North Dakota (ND) |
| County | Slope FIPS 38087 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Denver |
| Population | 154 |
| Coordinates | 46.497320, -103.355100 |
How ZIP+4 works in 58620
The four digits after the hyphen encode a delivery segment inside 58620. 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 58620 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 58620.
| ZIP | City | Distance |
|---|---|---|
| 58647 | New England, ND | 20 mi |
| 58623 | Bowman, ND | 23.5 mi |
| 58651 | Rhame, ND | 24.5 mi |
| 58655 | South Heart, ND | 24.8 mi |
| 58622 | Belfield, ND | 26.9 mi |
| 58654 | Sentinel Butte, ND | 29.3 mi |
| 58653 | Scranton, ND | 29.7 mi |
| 58632 | Golva, ND | 31.1 mi |
| 58649 | Reeder, ND | 32.6 mi |
| 58645 | Medora, ND | 32.9 mi |
| 58643 | Marmarth, ND | 33.8 mi |
| 58601 | Dickinson, ND | 37.9 mi |
Questions about 58620
What is the ZIP+4 code for 58620?
58620 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 58620, you need to look up a specific street address to get them.
What city is 58620?
58620 is assigned to Amidon, North Dakota, in Slope 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.