ZIP Code 43543 — Montpelier, OH
43543 is a standard (street delivery) ZIP code serving Montpelier, 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 43543 at a glance
| ZIP code | 43543 |
|---|---|
| Primary city | Montpelier |
| State | Ohio (OH) |
| County | Williams FIPS 39171 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 7,401 |
| Coordinates | 41.605750, -84.633800 |
How ZIP+4 works in 43543
The four digits after the hyphen encode a delivery segment inside 43543. 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 43543 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 43543.
| ZIP | City | Distance |
|---|---|---|
| 43554 | Pioneer, OH | 5.3 mi |
| 43518 | Edon, OH | 6.3 mi |
| 43531 | Kunkle, OH | 7.4 mi |
| 43505 | Blakeslee, OH | 7.5 mi |
| 49232 | Camden, MI | 9.5 mi |
| 43501 | Alvordton, OH | 9.9 mi |
| 43570 | West Unity, OH | 10 mi |
| 43506 | Bryan, OH | 10.3 mi |
| 43517 | Edgerton, OH | 12.4 mi |
| 46742 | Hamilton, IN | 13.2 mi |
| 49288 | Waldron, MI | 13.7 mi |
| 43557 | Stryker, OH | 14.8 mi |
Questions about 43543
What is the ZIP+4 code for 43543?
43543 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 43543, you need to look up a specific street address to get them.
What city is 43543?
43543 is assigned to Montpelier, 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.