ZIP Code 19073 — Newtown Square, PA
19073 is a standard (street delivery) ZIP code serving Newtown Square, Pennsylvania, in Delaware 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 19073 at a glance
| ZIP code | 19073 |
|---|---|
| Primary city | Newtown Square |
| State | Pennsylvania (PA) |
| County | Delaware FIPS 42045 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 21,915 |
| Coordinates | 39.980930, -75.434600 |
How ZIP+4 works in 19073
The four digits after the hyphen encode a delivery segment inside 19073. 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 19073 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 19073.
| ZIP | City | Distance |
|---|---|---|
| 19312 | Berwyn, PA | 3.6 mi |
| 19008 | Broomall, PA | 3.9 mi |
| 19063 | Media, PA | 4.2 mi |
| 19333 | Devon, PA | 4.3 mi |
| 19301 | Paoli, PA | 4.8 mi |
| 19052 | Lenni, PA | 5.8 mi |
| 19087 | Wayne, PA | 5.9 mi |
| 19319 | Cheyney, PA | 6 mi |
| 19085 | Villanova, PA | 6 mi |
| 19064 | Springfield, PA | 6.1 mi |
| 19010 | Bryn Mawr, PA | 6.3 mi |
| 19342 | Glen Mills, PA | 6.4 mi |
Questions about 19073
What is the ZIP+4 code for 19073?
19073 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 19073, you need to look up a specific street address to get them.
What city is 19073?
19073 is assigned to Newtown Square, Pennsylvania, in Delaware 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.