ZIP Code 45801 — Lima, OH
45801 is a standard (street delivery) ZIP code serving Lima, Ohio, in Allen 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 45801 at a glance
| ZIP code | 45801 |
|---|---|
| Primary city | Lima |
| State | Ohio (OH) |
| County | Allen FIPS 39003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 21,739 |
| Coordinates | 40.774760, -84.037030 |
How ZIP+4 works in 45801
The four digits after the hyphen encode a delivery segment inside 45801. 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 45801 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.
Other ZIP codes in Lima
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 45801.
| ZIP | City | Distance |
|---|---|---|
| 45804 | Lima, OH | 4.4 mi |
| 45820 | Cairo, OH | 4.6 mi |
| 45854 | Lafayette, OH | 4.6 mi |
| 45808 | Beaverdam, OH | 5.2 mi |
| 45805 | Lima, OH | 7.2 mi |
| 45807 | Lima, OH | 7.2 mi |
| 45850 | Harrod, OH | 7.9 mi |
| 45806 | Lima, OH | 8.3 mi |
| 45809 | Gomer, OH | 9.1 mi |
| 45893 | Vaughnsville, OH | 9.3 mi |
| 45830 | Columbus Grove, OH | 9.5 mi |
| 45817 | Bluffton, OH | 10.7 mi |
Questions about 45801
What is the ZIP+4 code for 45801?
45801 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 45801, you need to look up a specific street address to get them.
What city is 45801?
45801 is assigned to Lima, Ohio, in Allen 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.