ZIP Code 19551 — Robesonia, PA
19551 is a standard (street delivery) ZIP code serving Robesonia, Pennsylvania, in Berks 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 19551 at a glance
| ZIP code | 19551 |
|---|---|
| Primary city | Robesonia |
| State | Pennsylvania (PA) |
| County | Berks FIPS 42011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,778 |
| Coordinates | 40.359510, -76.142130 |
How ZIP+4 works in 19551
The four digits after the hyphen encode a delivery segment inside 19551. 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 19551 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 19551.
| ZIP | City | Distance |
|---|---|---|
| 19565 | Wernersville, PA | 3 mi |
| 19567 | Womelsdorf, PA | 4.4 mi |
| 19608 | Reading, PA | 6.4 mi |
| 17569 | Reinholds, PA | 6.6 mi |
| 19506 | Bernville, PA | 6.9 mi |
| 17039 | Kleinfeltersville, PA | 6.9 mi |
| 17087 | Richland, PA | 7.1 mi |
| 17073 | Newmanstown, PA | 7.4 mi |
| 19609 | Reading, PA | 8 mi |
| 17517 | Denver, PA | 8 mi |
| 19610 | Reading, PA | 8.8 mi |
| 19550 | Rehrersburg, PA | 8.8 mi |
Questions about 19551
What is the ZIP+4 code for 19551?
19551 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 19551, you need to look up a specific street address to get them.
What city is 19551?
19551 is assigned to Robesonia, Pennsylvania, in Berks 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.