ZIP Code 45821 — Cecil, OH
45821 is a standard (street delivery) ZIP code serving Cecil, Ohio, in Paulding 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 45821 at a glance
| ZIP code | 45821 |
|---|---|
| Primary city | Cecil |
| State | Ohio (OH) |
| County | Paulding FIPS 39125 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 759 |
| Coordinates | 41.226430, -84.562080 |
How ZIP+4 works in 45821
The four digits after the hyphen encode a delivery segment inside 45821. 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 45821 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 45821.
| ZIP | City | Distance |
|---|---|---|
| 43556 | Sherwood, OH | 5.5 mi |
| 45879 | Paulding, OH | 6.7 mi |
| 43536 | Mark Center, OH | 7.1 mi |
| 45813 | Antwerp, OH | 9.1 mi |
| 45855 | Latty, OH | 9.6 mi |
| 43549 | Ney, OH | 10.5 mi |
| 43526 | Hicksville, OH | 10.6 mi |
| 45873 | Oakwood, OH | 11.3 mi |
| 43520 | Farmer, OH | 11.3 mi |
| 43512 | Defiance, OH | 11.8 mi |
| 45861 | Melrose, OH | 12 mi |
| 45851 | Haviland, OH | 13.5 mi |
Questions about 45821
What is the ZIP+4 code for 45821?
45821 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 45821, you need to look up a specific street address to get them.
What city is 45821?
45821 is assigned to Cecil, Ohio, in Paulding 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.