ZIP Code 18073 — Pennsburg, PA
18073 is a standard (street delivery) ZIP code serving Pennsburg, Pennsylvania, in Montgomery 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 18073 at a glance
| ZIP code | 18073 |
|---|---|
| Primary city | Pennsburg |
| State | Pennsylvania (PA) |
| County | Montgomery FIPS 42091 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 11,755 |
| Coordinates | 40.383780, -75.477020 |
How ZIP+4 works in 18073
The four digits after the hyphen encode a delivery segment inside 18073. 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 18073 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 18073.
| ZIP | City | Distance |
|---|---|---|
| 18076 | Red Hill, PA | 0.7 mi |
| 18054 | Green Lane, PA | 2.9 mi |
| 18041 | East Greenville, PA | 3 mi |
| 18070 | Palm, PA | 4.6 mi |
| 18074 | Perkiomenville, PA | 4.8 mi |
| 19503 | Bally, PA | 5.4 mi |
| 18970 | Trumbauersville, PA | 5.4 mi |
| 18935 | Milford Square, PA | 5.5 mi |
| 18056 | Hereford, PA | 5.8 mi |
| 19435 | Frederick, PA | 6 mi |
| 19504 | Barto, PA | 6.1 mi |
| 18092 | Zionsville, PA | 6.2 mi |
Questions about 18073
What is the ZIP+4 code for 18073?
18073 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 18073, you need to look up a specific street address to get them.
What city is 18073?
18073 is assigned to Pennsburg, Pennsylvania, in Montgomery 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.