ZIP Code 48085 — Troy, MI
48085 is a standard (street delivery) ZIP code serving Troy, Michigan, in Oakland 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 48085 at a glance
| ZIP code | 48085 |
|---|---|
| Primary city | Troy |
| State | Michigan (MI) |
| County | Oakland FIPS 26125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 27,231 |
| Coordinates | 42.600600, -83.119820 |
How ZIP+4 works in 48085
The four digits after the hyphen encode a delivery segment inside 48085. 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 48085 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.
Other ZIP codes in Troy
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 48085.
| ZIP | City | Distance |
|---|---|---|
| 48098 | Troy, MI | 3 mi |
| 48083 | Troy, MI | 3 mi |
| 48314 | Sterling Heights, MI | 3.4 mi |
| 48310 | Sterling Heights, MI | 3.6 mi |
| 48084 | Troy, MI | 4 mi |
| 48307 | Rochester, MI | 4.1 mi |
| 48317 | Utica, MI | 4.6 mi |
| 48017 | Clawson, MI | 4.7 mi |
| 48309 | Rochester, MI | 5.1 mi |
| 48304 | Bloomfield Hills, MI | 5.9 mi |
| 48313 | Sterling Heights, MI | 6.1 mi |
| 48073 | Royal Oak, MI | 6.1 mi |
Questions about 48085
What is the ZIP+4 code for 48085?
48085 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 48085, you need to look up a specific street address to get them.
What city is 48085?
48085 is assigned to Troy, Michigan, in Oakland 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.