ZIP Code 45631 — Gallipolis, OH
45631 is a standard (street delivery) ZIP code serving Gallipolis, Ohio, in Gallia 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 45631 at a glance
| ZIP code | 45631 |
|---|---|
| Primary city | Gallipolis |
| State | Ohio (OH) |
| County | Gallia FIPS 39053 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 13,386 |
| Coordinates | 38.816720, -82.254860 |
How ZIP+4 works in 45631
The four digits after the hyphen encode a delivery segment inside 45631. 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 45631 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 45631.
| ZIP | City | Distance |
|---|---|---|
| 25515 | Gallipolis Ferry, WV | 6.9 mi |
| 45614 | Bidwell, OH | 7.8 mi |
| 45674 | Rio Grande, OH | 8 mi |
| 45658 | Patriot, OH | 9.3 mi |
| 25106 | Henderson, WV | 9.7 mi |
| 25550 | Point Pleasant, WV | 10.3 mi |
| 45620 | Cheshire, OH | 11.4 mi |
| 45623 | Crown City, OH | 12.1 mi |
| 25502 | Apple Grove, WV | 13 mi |
| 45685 | Thurman, OH | 13.3 mi |
| 25187 | Southside, WV | 14.1 mi |
| 45686 | Vinton, OH | 14.6 mi |
Questions about 45631
What is the ZIP+4 code for 45631?
45631 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 45631, you need to look up a specific street address to get them.
What city is 45631?
45631 is assigned to Gallipolis, Ohio, in Gallia 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.