ZIP Code 43566 — Waterville, OH
43566 is a standard (street delivery) ZIP code serving Waterville, Ohio, in Lucas 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 43566 at a glance
| ZIP code | 43566 |
|---|---|
| Primary city | Waterville |
| State | Ohio (OH) |
| County | Lucas FIPS 39095 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 8,604 |
| Coordinates | 41.494670, -83.758380 |
How ZIP+4 works in 43566
The four digits after the hyphen encode a delivery segment inside 43566. 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 43566 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 43566.
| ZIP | City | Distance |
|---|---|---|
| 43571 | Whitehouse, OH | 3.4 mi |
| 43525 | Haskins, OH | 3.5 mi |
| 43542 | Monclova, OH | 5 mi |
| 43565 | Tontogany, OH | 5.2 mi |
| 43547 | Neapolis, OH | 6.1 mi |
| 43537 | Maumee, OH | 6.7 mi |
| 43522 | Grand Rapids, OH | 6.7 mi |
| 43414 | Dunbridge, OH | 7.9 mi |
| 43402 | Bowling Green, OH | 8 mi |
| 43558 | Swanton, OH | 9.2 mi |
| 43528 | Holland, OH | 9.3 mi |
| 43551 | Perrysburg, OH | 9.6 mi |
Questions about 43566
What is the ZIP+4 code for 43566?
43566 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 43566, you need to look up a specific street address to get them.
What city is 43566?
43566 is assigned to Waterville, Ohio, in Lucas 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.