ZIP Code 16845 — Karthaus, PA
16845 is a standard (street delivery) ZIP code serving Karthaus, 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 16845 at a glance
| ZIP code | 16845 |
|---|---|
| Primary city | Karthaus |
| State | Pennsylvania (PA) |
| County | Centre FIPS 42027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,010 |
| Coordinates | 41.156410, -78.024220 |
How ZIP+4 works in 16845
The four digits after the hyphen encode a delivery segment inside 16845. 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 16845 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 16845.
| ZIP | City | Distance |
|---|---|---|
| 16871 | Pottersdale, PA | 2.3 mi |
| 16859 | Moshannon, PA | 7.4 mi |
| 16829 | Clarence, PA | 8.5 mi |
| 16834 | Drifting, PA | 9.1 mi |
| 17778 | Westport, PA | 9.4 mi |
| 16874 | Snow Shoe, PA | 10.9 mi |
| 16839 | Grassflat, PA | 11.5 mi |
| 16864 | Orviston, PA | 11.7 mi |
| 15861 | Sinnamahoning, PA | 11.7 mi |
| 16836 | Frenchville, PA | 12.5 mi |
| 16847 | Kylertown, PA | 13.1 mi |
| 16858 | Morrisdale, PA | 14.1 mi |
Questions about 16845
What is the ZIP+4 code for 16845?
16845 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 16845, you need to look up a specific street address to get them.
What city is 16845?
16845 is assigned to Karthaus, 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.