ZIP Code 17582 — Washington Boro, PA
17582 is a standard (street delivery) ZIP code serving Washington Boro, Pennsylvania, in Lancaster 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 17582 at a glance
| ZIP code | 17582 |
|---|---|
| Primary city | Washington Boro |
| State | Pennsylvania (PA) |
| County | Lancaster FIPS 42071 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,702 |
| Coordinates | 39.989280, -76.447560 |
How ZIP+4 works in 17582
The four digits after the hyphen encode a delivery segment inside 17582. 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 17582 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 17582.
| ZIP | City | Distance |
|---|---|---|
| 17554 | Mountville, PA | 3.6 mi |
| 17368 | Wrightsville, PA | 3.8 mi |
| 17551 | Millersville, PA | 3.8 mi |
| 17512 | Columbia, PA | 4 mi |
| 17317 | East Prospect, PA | 4.2 mi |
| 17516 | Conestoga, PA | 4.8 mi |
| 17603 | Lancaster, PA | 5.3 mi |
| 17504 | Bausman, PA | 6.7 mi |
| 17538 | Landisville, PA | 7 mi |
| 17366 | Windsor, PA | 7 mi |
| 17309 | Brogue, PA | 8 mi |
| 17552 | Mount Joy, PA | 9 mi |
Questions about 17582
What is the ZIP+4 code for 17582?
17582 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 17582, you need to look up a specific street address to get them.
What city is 17582?
17582 is assigned to Washington Boro, Pennsylvania, in Lancaster 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.