ZIP Code 43045 — Milford Center, OH
43045 is a standard (street delivery) ZIP code serving Milford Center, Ohio, in Union 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 43045 at a glance
| ZIP code | 43045 |
|---|---|
| Primary city | Milford Center |
| State | Ohio (OH) |
| County | Union FIPS 39159 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,739 |
| Coordinates | 40.169320, -83.449750 |
How ZIP+4 works in 43045
The four digits after the hyphen encode a delivery segment inside 43045. 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 43045 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 43045.
| ZIP | City | Distance |
|---|---|---|
| 43084 | Woodstock, OH | 4.9 mi |
| 43029 | Irwin, OH | 5.1 mi |
| 43077 | Unionville Center, OH | 6.1 mi |
| 43060 | North Lewisburg, OH | 7.4 mi |
| 43040 | Marysville, OH | 8 mi |
| 43064 | Plain City, OH | 9.8 mi |
| 43044 | Mechanicsburg, OH | 10.1 mi |
| 43009 | Cable, OH | 10.2 mi |
| 43047 | Mingo, OH | 10.3 mi |
| 43336 | Middleburg, OH | 10.3 mi |
| 43007 | Broadway, OH | 11.4 mi |
| 43319 | East Liberty, OH | 11.5 mi |
Questions about 43045
What is the ZIP+4 code for 43045?
43045 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 43045, you need to look up a specific street address to get them.
What city is 43045?
43045 is assigned to Milford Center, Ohio, in Union 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.