ZIP Code 48720 — Bay Port, MI
48720 is a standard (street delivery) ZIP code serving Bay Port, Michigan, in Huron 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 48720 at a glance
| ZIP code | 48720 |
|---|---|
| Primary city | Bay Port |
| State | Michigan (MI) |
| County | Huron FIPS 26063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Detroit |
| Population | 1,053 |
| Coordinates | 43.829400, -83.348080 |
How ZIP+4 works in 48720
The four digits after the hyphen encode a delivery segment inside 48720. 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 48720 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 48720.
| ZIP | City | Distance |
|---|---|---|
| 48755 | Pigeon, MI | 4 mi |
| 48759 | Sebewaing, MI | 7.4 mi |
| 48754 | Owendale, MI | 8.6 mi |
| 48731 | Elkton, MI | 9.5 mi |
| 48725 | Caseville, MI | 10.3 mi |
| 48735 | Gagetown, MI | 11.7 mi |
| 48767 | Unionville, MI | 14 mi |
| 48413 | Bad Axe, MI | 17.6 mi |
| 48726 | Cass City, MI | 17.7 mi |
| 48432 | Filion, MI | 19 mi |
| 48701 | Akron, MI | 19.4 mi |
| 48445 | Kinde, MI | 19.8 mi |
Questions about 48720
What is the ZIP+4 code for 48720?
48720 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 48720, you need to look up a specific street address to get them.
What city is 48720?
48720 is assigned to Bay Port, Michigan, in Huron 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.