ZIP Code 43520 — Farmer, OH
43520 is a standard (street delivery) ZIP code serving Farmer, Ohio, in Defiance 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 43520 at a glance
| ZIP code | 43520 |
|---|---|
| Primary city | Farmer |
| State | Ohio (OH) |
| County | Defiance FIPS 39039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Coordinates | 41.380080, -84.635650 |
How ZIP+4 works in 43520
The four digits after the hyphen encode a delivery segment inside 43520. 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 43520 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 43520.
| ZIP | City | Distance |
|---|---|---|
| 43536 | Mark Center, OH | 4.6 mi |
| 43549 | Ney, OH | 6.1 mi |
| 43556 | Sherwood, OH | 6.2 mi |
| 43517 | Edgerton, OH | 6.3 mi |
| 43526 | Hicksville, OH | 6.7 mi |
| 43506 | Bryan, OH | 7.3 mi |
| 43505 | Blakeslee, OH | 11.1 mi |
| 45821 | Cecil, OH | 11.3 mi |
| 43519 | Evansport, OH | 12.1 mi |
| 46721 | Butler, IN | 12.7 mi |
| 46785 | Saint Joe, IN | 13.6 mi |
| 45813 | Antwerp, OH | 14.1 mi |
Questions about 43520
What is the ZIP+4 code for 43520?
43520 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 43520, you need to look up a specific street address to get them.
What city is 43520?
43520 is assigned to Farmer, Ohio, in Defiance 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.