ZIP Code 48818 — Crystal, MI
48818 is a standard (street delivery) ZIP code serving Crystal, Michigan, in Montcalm 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 48818 at a glance
| ZIP code | 48818 |
|---|---|
| Primary city | Crystal |
| State | Michigan (MI) |
| County | Montcalm FIPS 26117 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 2,554 |
| Coordinates | 43.275900, -84.896610 |
How ZIP+4 works in 48818
The four digits after the hyphen encode a delivery segment inside 48818. 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 48818 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 48818.
| ZIP | City | Distance |
|---|---|---|
| 48889 | Sumner, MI | 5.1 mi |
| 48811 | Carson City, MI | 6.8 mi |
| 48891 | Vestaburg, MI | 8.4 mi |
| 48884 | Sheridan, MI | 8.7 mi |
| 48877 | Riverdale, MI | 9 mi |
| 48852 | Mcbrides, MI | 9.2 mi |
| 48856 | Middleton, MI | 9.6 mi |
| 48888 | Stanton, MI | 10.3 mi |
| 48829 | Edmore, MI | 10.6 mi |
| 48832 | Elwell, MI | 11.1 mi |
| 48845 | Hubbardston, MI | 11.8 mi |
| 48834 | Fenwick, MI | 12.1 mi |
Questions about 48818
What is the ZIP+4 code for 48818?
48818 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 48818, you need to look up a specific street address to get them.
What city is 48818?
48818 is assigned to Crystal, Michigan, in Montcalm 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.