ZIP Code 43554 — Pioneer, OH
43554 is a standard (street delivery) ZIP code serving Pioneer, Ohio, in Williams 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 43554 at a glance
| ZIP code | 43554 |
|---|---|
| Primary city | Pioneer |
| State | Ohio (OH) |
| County | Williams FIPS 39171 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,037 |
| Coordinates | 41.660240, -84.562390 |
How ZIP+4 works in 43554
The four digits after the hyphen encode a delivery segment inside 43554. 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 43554 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 43554.
| ZIP | City | Distance |
|---|---|---|
| 43531 | Kunkle, OH | 3.9 mi |
| 43543 | Montpelier, OH | 5.3 mi |
| 43501 | Alvordton, OH | 5.3 mi |
| 49232 | Camden, MI | 7.8 mi |
| 43570 | West Unity, OH | 8.1 mi |
| 49288 | Waldron, MI | 8.5 mi |
| 43518 | Edon, OH | 11 mi |
| 49266 | Osseo, MI | 12.6 mi |
| 43505 | Blakeslee, OH | 12.8 mi |
| 43506 | Bryan, OH | 13.3 mi |
| 49271 | Pittsford, MI | 13.5 mi |
| 43521 | Fayette, OH | 13.7 mi |
Questions about 43554
What is the ZIP+4 code for 43554?
43554 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 43554, you need to look up a specific street address to get them.
What city is 43554?
43554 is assigned to Pioneer, Ohio, in Williams 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.