ZIP Code 45330 — Gratis, OH
45330 is a standard (street delivery) ZIP code serving Gratis, Ohio, in Preble 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 45330 at a glance
| ZIP code | 45330 |
|---|---|
| Primary city | Gratis |
| State | Ohio (OH) |
| County | Preble FIPS 39135 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 710 |
| Coordinates | 39.648210, -84.528200 |
How ZIP+4 works in 45330
The four digits after the hyphen encode a delivery segment inside 45330. 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 45330 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 45330.
| ZIP | City | Distance |
|---|---|---|
| 45070 | West Elkton, OH | 4.3 mi |
| 45381 | West Alexandria, OH | 5.8 mi |
| 45325 | Farmersville, OH | 6.2 mi |
| 45064 | Somerville, OH | 6.7 mi |
| 45327 | Germantown, OH | 7 mi |
| 45311 | Camden, OH | 7.4 mi |
| 45042 | Middletown, OH | 8.4 mi |
| 45345 | New Lebanon, OH | 9.3 mi |
| 45320 | Eaton, OH | 10.9 mi |
| 45067 | Trenton, OH | 11.2 mi |
| 45062 | Seven Mile, OH | 11.3 mi |
| 45055 | Overpeck, OH | 13.2 mi |
Questions about 45330
What is the ZIP+4 code for 45330?
45330 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 45330, you need to look up a specific street address to get them.
What city is 45330?
45330 is assigned to Gratis, Ohio, in Preble 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.