ZIP Code 17055 — Mechanicsburg, PA
17055 is a standard (street delivery) ZIP code serving Mechanicsburg, Pennsylvania, in Cumberland 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 17055 at a glance
| ZIP code | 17055 |
|---|---|
| Primary city | Mechanicsburg |
| State | Pennsylvania (PA) |
| County | Cumberland FIPS 42041 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 42,006 |
| Coordinates | 40.177560, -76.997890 |
How ZIP+4 works in 17055
The four digits after the hyphen encode a delivery segment inside 17055. 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 17055 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 Mechanicsburg
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 17055.
| ZIP | City | Distance |
|---|---|---|
| 17027 | Grantham, PA | 1.5 mi |
| 17050 | Mechanicsburg, PA | 5.2 mi |
| 17011 | Camp Hill, PA | 5.4 mi |
| 17019 | Dillsburg, PA | 6.2 mi |
| 17339 | Lewisberry, PA | 6.8 mi |
| 17043 | Lemoyne, PA | 7 mi |
| 17007 | Boiling Springs, PA | 7 mi |
| 17323 | Franklintown, PA | 7.2 mi |
| 17070 | New Cumberland, PA | 7.3 mi |
| 17101 | Harrisburg, PA | 8.1 mi |
| 17025 | Enola, PA | 8.2 mi |
| 17102 | Harrisburg, PA | 8.4 mi |
Questions about 17055
What is the ZIP+4 code for 17055?
17055 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 17055, you need to look up a specific street address to get them.
What city is 17055?
17055 is assigned to Mechanicsburg, Pennsylvania, in Cumberland 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.