ZIP Code 43780 — Senecaville, OH
43780 is a standard (street delivery) ZIP code serving Senecaville, Ohio, in Guernsey 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 43780 at a glance
| ZIP code | 43780 |
|---|---|
| Primary city | Senecaville |
| State | Ohio (OH) |
| County | Guernsey FIPS 39059 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,515 |
| Coordinates | 39.922290, -81.440240 |
How ZIP+4 works in 43780
The four digits after the hyphen encode a delivery segment inside 43780. 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 43780 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 43780.
| ZIP | City | Distance |
|---|---|---|
| 43722 | Buffalo, OH | 4.2 mi |
| 43733 | Derwent, OH | 5.2 mi |
| 43772 | Pleasant City, OH | 5.3 mi |
| 43723 | Byesville, OH | 5.9 mi |
| 43750 | Kipling, OH | 6.1 mi |
| 43778 | Salesville, OH | 7.2 mi |
| 43779 | Sarahsville, OH | 7.3 mi |
| 43768 | Old Washington, OH | 8 mi |
| 43773 | Quaker City, OH | 8.8 mi |
| 43755 | Lore City, OH | 9.1 mi |
| 43711 | Ava, OH | 9.1 mi |
| 43788 | Summerfield, OH | 10.1 mi |
Questions about 43780
What is the ZIP+4 code for 43780?
43780 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 43780, you need to look up a specific street address to get them.
What city is 43780?
43780 is assigned to Senecaville, Ohio, in Guernsey 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.