ZIP Code 43724 — Caldwell, OH
43724 is a standard (street delivery) ZIP code serving Caldwell, Ohio, in Noble 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 43724 at a glance
| ZIP code | 43724 |
|---|---|
| Primary city | Caldwell |
| State | Ohio (OH) |
| County | Noble FIPS 39121 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 9,133 |
| Coordinates | 39.732670, -81.516600 |
How ZIP+4 works in 43724
The four digits after the hyphen encode a delivery segment inside 43724. 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 43724 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 43724.
| ZIP | City | Distance |
|---|---|---|
| 43717 | Belle Valley, OH | 4.4 mi |
| 45727 | Dexter City, OH | 6.3 mi |
| 43779 | Sarahsville, OH | 7.6 mi |
| 43711 | Ava, OH | 8.2 mi |
| 45746 | Macksburg, OH | 9.6 mi |
| 43772 | Pleasant City, OH | 10.2 mi |
| 45715 | Beverly, OH | 10.6 mi |
| 43732 | Cumberland, OH | 10.8 mi |
| 43788 | Summerfield, OH | 10.8 mi |
| 45721 | Coal Run, OH | 12.1 mi |
| 43786 | Stafford, OH | 12.8 mi |
| 45745 | Lower Salem, OH | 12.9 mi |
Questions about 43724
What is the ZIP+4 code for 43724?
43724 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 43724, you need to look up a specific street address to get them.
What city is 43724?
43724 is assigned to Caldwell, Ohio, in Noble 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.