ZIP Code 43536 — Mark Center, OH
43536 is a standard (street delivery) ZIP code serving Mark Center, 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 43536 at a glance
| ZIP code | 43536 |
|---|---|
| Primary city | Mark Center |
| State | Ohio (OH) |
| County | Defiance FIPS 39039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 338 |
| Coordinates | 41.313450, -84.634000 |
How ZIP+4 works in 43536
The four digits after the hyphen encode a delivery segment inside 43536. 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 43536 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 43536.
| ZIP | City | Distance |
|---|---|---|
| 43556 | Sherwood, OH | 3.4 mi |
| 43520 | Farmer, OH | 4.6 mi |
| 43526 | Hicksville, OH | 5 mi |
| 45821 | Cecil, OH | 7.1 mi |
| 43549 | Ney, OH | 7.4 mi |
| 45813 | Antwerp, OH | 9.9 mi |
| 43517 | Edgerton, OH | 10 mi |
| 43506 | Bryan, OH | 11.3 mi |
| 46785 | Saint Joe, IN | 13 mi |
| 46743 | Harlan, IN | 13.2 mi |
| 45879 | Paulding, OH | 13.2 mi |
| 43519 | Evansport, OH | 13.8 mi |
Questions about 43536
What is the ZIP+4 code for 43536?
43536 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 43536, you need to look up a specific street address to get them.
What city is 43536?
43536 is assigned to Mark Center, 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.