ZIP Code 19310 — Atglen, PA
19310 is a standard (street delivery) ZIP code serving Atglen, Pennsylvania, in Chester 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 19310 at a glance
| ZIP code | 19310 |
|---|---|
| Primary city | Atglen |
| State | Pennsylvania (PA) |
| County | Chester FIPS 42029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,950 |
| Coordinates | 39.934780, -75.970380 |
How ZIP+4 works in 19310
The four digits after the hyphen encode a delivery segment inside 19310. 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 19310 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 19310.
| ZIP | City | Distance |
|---|---|---|
| 19365 | Parkesburg, PA | 3.1 mi |
| 17509 | Christiana, PA | 3.6 mi |
| 19367 | Pomeroy, PA | 5 mi |
| 19369 | Sadsburyville, PA | 5.1 mi |
| 19330 | Cochranville, PA | 5.1 mi |
| 17527 | Gap, PA | 5.7 mi |
| 17535 | Kinzers, PA | 6.4 mi |
| 17562 | Paradise, PA | 7.1 mi |
| 19320 | Coatesville, PA | 7.8 mi |
| 17536 | Kirkwood, PA | 8.3 mi |
| 19358 | Modena, PA | 8.9 mi |
| 19390 | West Grove, PA | 9.7 mi |
Questions about 19310
What is the ZIP+4 code for 19310?
19310 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 19310, you need to look up a specific street address to get them.
What city is 19310?
19310 is assigned to Atglen, Pennsylvania, in Chester 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.