ZIP Code 45230 — Cincinnati, OH
45230 is a standard (street delivery) ZIP code serving Cincinnati, Ohio, in Hamilton 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 45230 at a glance
| ZIP code | 45230 |
|---|---|
| Primary city | Cincinnati |
| State | Ohio (OH) |
| County | Hamilton FIPS 39061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 27,501 |
| Coordinates | 39.074450, -84.390820 |
How ZIP+4 works in 45230
The four digits after the hyphen encode a delivery segment inside 45230. 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 45230 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.
Other ZIP codes in Cincinnati
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 45230.
| ZIP | City | Distance |
|---|---|---|
| 41085 | Silver Grove, KY | 2.7 mi |
| 45226 | Cincinnati, OH | 3 mi |
| 41075 | Fort Thomas, KY | 3.3 mi |
| 45255 | Cincinnati, OH | 3.6 mi |
| 41074 | Dayton, KY | 4.5 mi |
| 45244 | Cincinnati, OH | 4.6 mi |
| 41076 | Newport, KY | 4.7 mi |
| 45208 | Cincinnati, OH | 4.8 mi |
| 41071 | Newport, KY | 4.9 mi |
| 41073 | Bellevue, KY | 5 mi |
| 41059 | Melbourne, KY | 5.2 mi |
| 45227 | Cincinnati, OH | 5.5 mi |
Questions about 45230
What is the ZIP+4 code for 45230?
45230 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 45230, you need to look up a specific street address to get them.
What city is 45230?
45230 is assigned to Cincinnati, Ohio, in Hamilton 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.