ZIP Code 43445 — Martin, OH
43445 is a standard (street delivery) ZIP code serving Martin, Ohio, in Ottawa 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 43445 at a glance
| ZIP code | 43445 |
|---|---|
| Primary city | Martin |
| State | Ohio (OH) |
| County | Ottawa FIPS 39123 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 801 |
| Coordinates | 41.586440, -83.294880 |
How ZIP+4 works in 43445
The four digits after the hyphen encode a delivery segment inside 43445. 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 43445 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 43445.
| ZIP | City | Distance |
|---|---|---|
| 43468 | Williston, OH | 2.8 mi |
| 43432 | Graytown, OH | 2.9 mi |
| 43412 | Curtice, OH | 3.2 mi |
| 43408 | Clay Center, OH | 3.7 mi |
| 43458 | Rocky Ridge, OH | 5.7 mi |
| 43430 | Genoa, OH | 5.9 mi |
| 43416 | Elmore, OH | 7.1 mi |
| 43447 | Millbury, OH | 7.3 mi |
| 43616 | Oregon, OH | 7.7 mi |
| 43449 | Oak Harbor, OH | 8.7 mi |
| 43619 | Northwood, OH | 9.3 mi |
| 43469 | Woodville, OH | 9.5 mi |
Questions about 43445
What is the ZIP+4 code for 43445?
43445 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 43445, you need to look up a specific street address to get them.
What city is 43445?
43445 is assigned to Martin, Ohio, in Ottawa 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.