ZIP Code 16145 — Sandy Lake, PA
16145 is a standard (street delivery) ZIP code serving Sandy Lake, Pennsylvania, in Mercer 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 16145 at a glance
| ZIP code | 16145 |
|---|---|
| Primary city | Sandy Lake |
| State | Pennsylvania (PA) |
| County | Mercer FIPS 42085 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,660 |
| Coordinates | 41.385740, -80.074220 |
How ZIP+4 works in 16145
The four digits after the hyphen encode a delivery segment inside 16145. 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 16145 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 16145.
| ZIP | City | Distance |
|---|---|---|
| 16153 | Stoneboro, PA | 4.7 mi |
| 16311 | Carlton, PA | 5.3 mi |
| 16114 | Clarks Mills, PA | 6 mi |
| 16362 | Utica, PA | 7.3 mi |
| 16151 | Sheakleyville, PA | 7.9 mi |
| 16133 | Jackson Center, PA | 8.2 mi |
| 16130 | Hadley, PA | 8.4 mi |
| 16342 | Polk, PA | 8.8 mi |
| 16314 | Cochranton, PA | 9.2 mi |
| 16124 | Fredonia, PA | 10.5 mi |
| 16323 | Franklin, PA | 12.8 mi |
| 16137 | Mercer, PA | 13.6 mi |
Questions about 16145
What is the ZIP+4 code for 16145?
16145 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 16145, you need to look up a specific street address to get them.
What city is 16145?
16145 is assigned to Sandy Lake, Pennsylvania, in Mercer 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.