ZIP Code 16601 — Altoona, PA
16601 is a standard (street delivery) ZIP code serving Altoona, Pennsylvania, in Blair 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 16601 at a glance
| ZIP code | 16601 |
|---|---|
| Primary city | Altoona |
| State | Pennsylvania (PA) |
| County | Blair FIPS 42013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 33,515 |
| Coordinates | 40.553380, -78.372830 |
How ZIP+4 works in 16601
The four digits after the hyphen encode a delivery segment inside 16601. 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 16601 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.
Other ZIP codes in Altoona
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 16601.
| ZIP | City | Distance |
|---|---|---|
| 16602 | Altoona, PA | 2.7 mi |
| 16617 | Bellwood, PA | 4.1 mi |
| 16684 | Tipton, PA | 6.9 mi |
| 16636 | Dysart, PA | 7.5 mi |
| 16648 | Hollidaysburg, PA | 8 mi |
| 16613 | Ashville, PA | 8.4 mi |
| 16619 | Blandburg, PA | 9.3 mi |
| 16639 | Fallentimber, PA | 10 mi |
| 16693 | Williamsburg, PA | 10.2 mi |
| 16686 | Tyrone, PA | 10.6 mi |
| 16641 | Gallitzin, PA | 10.9 mi |
| 16635 | Duncansville, PA | 11.2 mi |
Questions about 16601
What is the ZIP+4 code for 16601?
16601 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 16601, you need to look up a specific street address to get them.
What city is 16601?
16601 is assigned to Altoona, Pennsylvania, in Blair 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.