ZIP Code 45770 — Portland, OH
45770 is a standard (street delivery) ZIP code serving Portland, Ohio, in Meigs 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 45770 at a glance
| ZIP code | 45770 |
|---|---|
| Primary city | Portland |
| State | Ohio (OH) |
| County | Meigs FIPS 39105 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 635 |
| Coordinates | 38.985860, -81.802380 |
How ZIP+4 works in 45770
The four digits after the hyphen encode a delivery segment inside 45770. 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 45770 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 45770.
| ZIP | City | Distance |
|---|---|---|
| 26164 | Ravenswood, WV | 4.5 mi |
| 45771 | Racine, OH | 5.2 mi |
| 25262 | Millwood, WV | 5.6 mi |
| 45743 | Long Bottom, OH | 6.7 mi |
| 45779 | Syracuse, OH | 9.1 mi |
| 25265 | New Haven, WV | 9.2 mi |
| 25239 | Cottageville, WV | 9.8 mi |
| 45720 | Chester, OH | 9.9 mi |
| 25253 | Letart, WV | 9.9 mi |
| 25247 | Hartford, WV | 10.1 mi |
| 25264 | Mount Alto, WV | 10.3 mi |
| 45772 | Reedsville, OH | 10.7 mi |
Questions about 45770
What is the ZIP+4 code for 45770?
45770 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 45770, you need to look up a specific street address to get them.
What city is 45770?
45770 is assigned to Portland, Ohio, in Meigs 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.