ZIP Code 48864 — Okemos, MI
48864 is a standard (street delivery) ZIP code serving Okemos, Michigan, in Ingham 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 48864 at a glance
| ZIP code | 48864 |
|---|---|
| Primary city | Okemos |
| State | Michigan (MI) |
| County | Ingham FIPS 26065 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 23,901 |
| Coordinates | 42.702150, -84.409020 |
How ZIP+4 works in 48864
The four digits after the hyphen encode a delivery segment inside 48864. 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 48864 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 48864.
| ZIP | City | Distance |
|---|---|---|
| 48824 | East Lansing, MI | 3.6 mi |
| 48825 | East Lansing, MI | 4.1 mi |
| 48823 | East Lansing, MI | 4.7 mi |
| 48840 | Haslett, MI | 4.9 mi |
| 48910 | Lansing, MI | 5.9 mi |
| 48912 | Lansing, MI | 6.3 mi |
| 48895 | Williamston, MI | 6.6 mi |
| 48933 | Lansing, MI | 7.7 mi |
| 48842 | Holt, MI | 8.1 mi |
| 48911 | Lansing, MI | 8.5 mi |
| 48854 | Mason, MI | 8.6 mi |
| 48915 | Lansing, MI | 8.6 mi |
Questions about 48864
What is the ZIP+4 code for 48864?
48864 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 48864, you need to look up a specific street address to get them.
What city is 48864?
48864 is assigned to Okemos, Michigan, in Ingham 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.