ZIP Code 16222 — Dayton, PA
16222 is a standard (street delivery) ZIP code serving Dayton, Pennsylvania, in Armstrong 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 16222 at a glance
| ZIP code | 16222 |
|---|---|
| Primary city | Dayton |
| State | Pennsylvania (PA) |
| County | Armstrong FIPS 42005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,306 |
| Coordinates | 40.871710, -79.257190 |
How ZIP+4 works in 16222
The four digits after the hyphen encode a delivery segment inside 16222. 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 16222 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 16222.
| ZIP | City | Distance |
|---|---|---|
| 16244 | Nu Mine, PA | 4.7 mi |
| 16211 | Beyer, PA | 6.1 mi |
| 16256 | Smicksburg, PA | 6.3 mi |
| 16263 | Yatesboro, PA | 6.5 mi |
| 16250 | Sagamore, PA | 6.7 mi |
| 16246 | Plumville, PA | 6.8 mi |
| 15763 | Northpoint, PA | 7.2 mi |
| 16253 | Seminole, PA | 7.2 mi |
| 15778 | Timblin, PA | 7.3 mi |
| 16249 | Rural Valley, PA | 8.3 mi |
| 16245 | Oak Ridge, PA | 9.2 mi |
| 16223 | Distant, PA | 9.4 mi |
Questions about 16222
What is the ZIP+4 code for 16222?
16222 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 16222, you need to look up a specific street address to get them.
What city is 16222?
16222 is assigned to Dayton, Pennsylvania, in Armstrong 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.