ZIP Code 16651 — Houtzdale, PA
16651 is a standard (street delivery) ZIP code serving Houtzdale, Pennsylvania, in Clearfield 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 16651 at a glance
| ZIP code | 16651 |
|---|---|
| Primary city | Houtzdale |
| State | Pennsylvania (PA) |
| County | Clearfield FIPS 42033 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,484 |
| Coordinates | 40.850500, -78.379450 |
How ZIP+4 works in 16651
The four digits after the hyphen encode a delivery segment inside 16651. 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 16651 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 16651.
| ZIP | City | Distance |
|---|---|---|
| 16620 | Brisbin, PA | 1.6 mi |
| 16666 | Osceola Mills, PA | 3.7 mi |
| 16661 | Madera, PA | 3.9 mi |
| 16671 | Ramey, PA | 4.1 mi |
| 16863 | Olanta, PA | 6.4 mi |
| 16878 | West Decatur, PA | 6.8 mi |
| 16616 | Beccaria, PA | 6.8 mi |
| 16680 | Smithmill, PA | 6.9 mi |
| 16645 | Glen Hope, PA | 7.1 mi |
| 16861 | New Millport, PA | 7.4 mi |
| 16677 | Sandy Ridge, PA | 7.4 mi |
| 16837 | Glen Richey, PA | 8.2 mi |
Questions about 16651
What is the ZIP+4 code for 16651?
16651 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 16651, you need to look up a specific street address to get them.
What city is 16651?
16651 is assigned to Houtzdale, Pennsylvania, in Clearfield 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.