ZIP Code 16143 — Pulaski, PA
16143 is a standard (street delivery) ZIP code serving Pulaski, Pennsylvania, in Lawrence 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 16143 at a glance
| ZIP code | 16143 |
|---|---|
| Primary city | Pulaski |
| State | Pennsylvania (PA) |
| County | Lawrence FIPS 42073 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,100 |
| Coordinates | 41.105280, -80.454340 |
How ZIP+4 works in 16143
The four digits after the hyphen encode a delivery segment inside 16143. 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 16143 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 16143.
| ZIP | City | Distance |
|---|---|---|
| 16140 | New Bedford, PA | 3 mi |
| 16159 | West Middlesex, PA | 3.8 mi |
| 16155 | Villa Maria, PA | 3.9 mi |
| 16116 | Edinburg, PA | 4.7 mi |
| 44436 | Lowellville, OH | 5.6 mi |
| 16142 | New Wilmington, PA | 6.3 mi |
| 16172 | New Wilmington, PA | 6.5 mi |
| 16105 | New Castle, PA | 7 mi |
| 16161 | Wheatland, PA | 7 mi |
| 16132 | Hillsville, PA | 7.3 mi |
| 44405 | Campbell, OH | 7.4 mi |
| 16121 | Farrell, PA | 7.6 mi |
Questions about 16143
What is the ZIP+4 code for 16143?
16143 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 16143, you need to look up a specific street address to get them.
What city is 16143?
16143 is assigned to Pulaski, Pennsylvania, in Lawrence 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.