ZIP Code 16677 — Sandy Ridge, PA
16677 is a standard (street delivery) ZIP code serving Sandy Ridge, Pennsylvania, in Centre 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 16677 at a glance
| ZIP code | 16677 |
|---|---|
| Primary city | Sandy Ridge |
| State | Pennsylvania (PA) |
| County | Centre FIPS 42027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 239 |
| Coordinates | 40.815070, -78.245700 |
How ZIP+4 works in 16677
The four digits after the hyphen encode a delivery segment inside 16677. 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 16677 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 16677.
| ZIP | City | Distance |
|---|---|---|
| 16666 | Osceola Mills, PA | 5.2 mi |
| 16866 | Philipsburg, PA | 5.3 mi |
| 16620 | Brisbin, PA | 5.8 mi |
| 16651 | Houtzdale, PA | 7.4 mi |
| 16840 | Hawk Run, PA | 8 mi |
| 16671 | Ramey, PA | 8.3 mi |
| 16680 | Smithmill, PA | 9.3 mi |
| 16860 | Munson, PA | 9.9 mi |
| 16686 | Tyrone, PA | 10 mi |
| 16878 | West Decatur, PA | 10 mi |
| 16821 | Allport, PA | 10.2 mi |
| 16870 | Port Matilda, PA | 10.3 mi |
Questions about 16677
What is the ZIP+4 code for 16677?
16677 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 16677, you need to look up a specific street address to get them.
What city is 16677?
16677 is assigned to Sandy Ridge, Pennsylvania, in Centre 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.