ZIP Code 49421 — Hesperia, MI
49421 is a standard (street delivery) ZIP code serving Hesperia, Michigan, in Oceana 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 49421 at a glance
| ZIP code | 49421 |
|---|---|
| Primary city | Hesperia |
| State | Michigan (MI) |
| County | Oceana FIPS 26127 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 5,734 |
| Coordinates | 43.599450, -86.066580 |
How ZIP+4 works in 49421
The four digits after the hyphen encode a delivery segment inside 49421. 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 49421 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 49421.
| ZIP | City | Distance |
|---|---|---|
| 49459 | Walkerville, MI | 9.7 mi |
| 49412 | Fremont, MI | 10.7 mi |
| 49425 | Holton, MI | 11.2 mi |
| 49452 | Rothbury, MI | 11.2 mi |
| 49420 | Hart, MI | 13.6 mi |
| 49309 | Bitely, MI | 14.5 mi |
| 49312 | Brohman, MI | 14.7 mi |
| 49455 | Shelby, MI | 15 mi |
| 49349 | White Cloud, MI | 16.3 mi |
| 49446 | New Era, MI | 16.5 mi |
| 49457 | Twin Lake, MI | 17.6 mi |
| 49437 | Montague, MI | 18.5 mi |
Questions about 49421
What is the ZIP+4 code for 49421?
49421 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 49421, you need to look up a specific street address to get them.
What city is 49421?
49421 is assigned to Hesperia, Michigan, in Oceana 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.