ZIP Code 49643 — Interlochen, MI
49643 is a standard (street delivery) ZIP code serving Interlochen, Michigan, in Benzie 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 49643 at a glance
| ZIP code | 49643 |
|---|---|
| Primary city | Interlochen |
| State | Michigan (MI) |
| County | Benzie FIPS 26019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 6,963 |
| Coordinates | 44.639590, -85.833570 |
How ZIP+4 works in 49643
The four digits after the hyphen encode a delivery segment inside 49643. 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 49643 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 49643.
| ZIP | City | Distance |
|---|---|---|
| 49637 | Grawn, MI | 6.1 mi |
| 49650 | Lake Ann, MI | 6.9 mi |
| 49685 | Traverse City, MI | 7.5 mi |
| 49683 | Thompsonville, MI | 8.4 mi |
| 49617 | Beulah, MI | 9.9 mi |
| 49620 | Buckley, MI | 10.9 mi |
| 49640 | Honor, MI | 11.4 mi |
| 49684 | Traverse City, MI | 12.8 mi |
| 49616 | Benzonia, MI | 13.1 mi |
| 49625 | Copemish, MI | 14.7 mi |
| 49621 | Cedar, MI | 15.6 mi |
| 49649 | Kingsley, MI | 15.9 mi |
Questions about 49643
What is the ZIP+4 code for 49643?
49643 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 49643, you need to look up a specific street address to get them.
What city is 49643?
49643 is assigned to Interlochen, Michigan, in Benzie 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.