ZIP Code 17066 — Mount Union, PA
17066 is a standard (street delivery) ZIP code serving Mount Union, Pennsylvania, in Huntingdon 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 17066 at a glance
| ZIP code | 17066 |
|---|---|
| Primary city | Mount Union |
| State | Pennsylvania (PA) |
| County | Huntingdon FIPS 42061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 5,102 |
| Coordinates | 40.358850, -77.858920 |
How ZIP+4 works in 17066
The four digits after the hyphen encode a delivery segment inside 17066. 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 17066 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 17066.
| ZIP | City | Distance |
|---|---|---|
| 17075 | Newton Hamilton, PA | 2.7 mi |
| 17260 | Shirleysburg, PA | 4.6 mi |
| 17243 | Orbisonia, PA | 5.7 mi |
| 17052 | Mapleton Depot, PA | 7.1 mi |
| 17002 | Allensville, PA | 7.3 mi |
| 17051 | Mcveytown, PA | 8.2 mi |
| 17249 | Rockhill Furnace, PA | 8.4 mi |
| 17213 | Blairs Mills, PA | 8.6 mi |
| 17060 | Mill Creek, PA | 9.2 mi |
| 17021 | East Waterford, PA | 10.5 mi |
| 17217 | Concord, PA | 11 mi |
| 16622 | Calvin, PA | 11.3 mi |
Questions about 17066
What is the ZIP+4 code for 17066?
17066 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 17066, you need to look up a specific street address to get them.
What city is 17066?
17066 is assigned to Mount Union, Pennsylvania, in Huntingdon 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.