ZIP Code 45324 — Fairborn, OH
45324 is a standard (street delivery) ZIP code serving Fairborn, Ohio, in Greene 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 45324 at a glance
| ZIP code | 45324 |
|---|---|
| Primary city | Fairborn |
| State | Ohio (OH) |
| County | Greene FIPS 39057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 41,194 |
| Coordinates | 39.819860, -84.000260 |
How ZIP+4 works in 45324
The four digits after the hyphen encode a delivery segment inside 45324. 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 45324 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 45324.
| ZIP | City | Distance |
|---|---|---|
| 45433 | Dayton, OH | 2.8 mi |
| 45341 | Medway, OH | 4 mi |
| 45435 | Dayton, OH | 4.3 mi |
| 45323 | Enon, OH | 4.4 mi |
| 45431 | Dayton, OH | 5.7 mi |
| 45424 | Dayton, OH | 6.1 mi |
| 45387 | Yellow Springs, OH | 6.2 mi |
| 45434 | Dayton, OH | 6.9 mi |
| 45432 | Dayton, OH | 7.2 mi |
| 45319 | Donnelsville, OH | 7.3 mi |
| 45301 | Alpha, OH | 7.6 mi |
| 45404 | Dayton, OH | 8.4 mi |
Questions about 45324
What is the ZIP+4 code for 45324?
45324 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 45324, you need to look up a specific street address to get them.
What city is 45324?
45324 is assigned to Fairborn, Ohio, in Greene 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.