ZIP Code 19523 — Geigertown, PA
19523 is a standard (street delivery) ZIP code serving Geigertown, 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 19523 at a glance
| ZIP code | 19523 |
|---|---|
| Primary city | Geigertown |
| State | Pennsylvania (PA) |
| County | Berks FIPS 42011 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 41 |
| Coordinates | 40.201160, -75.849740 |
How ZIP+4 works in 19523
The four digits after the hyphen encode a delivery segment inside 19523. 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 19523 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 19523.
| ZIP | City | Distance |
|---|---|---|
| 19543 | Morgantown, PA | 3.3 mi |
| 19520 | Elverson, PA | 3.9 mi |
| 19508 | Birdsboro, PA | 4 mi |
| 19540 | Mohnton, PA | 6.6 mi |
| 19518 | Douglassville, PA | 7.2 mi |
| 19607 | Reading, PA | 8 mi |
| 17555 | Narvon, PA | 8.2 mi |
| 19344 | Honey Brook, PA | 8.4 mi |
| 19343 | Glenmoore, PA | 8.5 mi |
| 17507 | Bowmansville, PA | 8.8 mi |
| 19606 | Reading, PA | 9.3 mi |
| 19465 | Pottstown, PA | 9.3 mi |
Questions about 19523
What is the ZIP+4 code for 19523?
19523 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 19523, you need to look up a specific street address to get them.
What city is 19523?
19523 is assigned to Geigertown, 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.