ZIP Code 16131 — Hartstown, PA
16131 is a standard (street delivery) ZIP code serving Hartstown, Pennsylvania, in Crawford 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 16131 at a glance
| ZIP code | 16131 |
|---|---|
| Primary city | Hartstown |
| State | Pennsylvania (PA) |
| County | Crawford FIPS 42039 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 777 |
| Coordinates | 41.549080, -80.376170 |
How ZIP+4 works in 16131
The four digits after the hyphen encode a delivery segment inside 16131. 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 16131 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 16131.
| ZIP | City | Distance |
|---|---|---|
| 16110 | Adamsville, PA | 3.6 mi |
| 16111 | Atlantic, PA | 5.2 mi |
| 16316 | Conneaut Lake, PA | 5.3 mi |
| 16134 | Jamestown, PA | 5.6 mi |
| 16424 | Linesville, PA | 8.3 mi |
| 16422 | Harmonsburg, PA | 8.6 mi |
| 16125 | Greenville, PA | 9.9 mi |
| 16130 | Hadley, PA | 11 mi |
| 16151 | Sheakleyville, PA | 11.5 mi |
| 44003 | Andover, OH | 11.8 mi |
| 44093 | Williamsfield, OH | 12.4 mi |
| 16335 | Meadville, PA | 12.8 mi |
Questions about 16131
What is the ZIP+4 code for 16131?
16131 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 16131, you need to look up a specific street address to get them.
What city is 16131?
16131 is assigned to Hartstown, Pennsylvania, in Crawford 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.