ZIP Code 16820 — Aaronsburg, PA
16820 is a standard (street delivery) ZIP code serving Aaronsburg, 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 16820 at a glance
| ZIP code | 16820 |
|---|---|
| Primary city | Aaronsburg |
| State | Pennsylvania (PA) |
| County | Centre FIPS 42027 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,457 |
| Coordinates | 40.919950, -77.387020 |
How ZIP+4 works in 16820
The four digits after the hyphen encode a delivery segment inside 16820. 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 16820 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 16820.
| ZIP | City | Distance |
|---|---|---|
| 16882 | Woodward, PA | 2.7 mi |
| 16872 | Rebersburg, PA | 3.6 mi |
| 16854 | Millheim, PA | 4.7 mi |
| 16832 | Coburn, PA | 5.6 mi |
| 17885 | Weikert, PA | 6.1 mi |
| 16852 | Madisonburg, PA | 8 mi |
| 17747 | Loganton, PA | 9 mi |
| 17845 | Millmont, PA | 9.3 mi |
| 16848 | Lamar, PA | 10 mi |
| 17835 | Laurelton, PA | 10.2 mi |
| 17750 | Mackeyville, PA | 10.5 mi |
| 16875 | Spring Mills, PA | 10.8 mi |
Questions about 16820
What is the ZIP+4 code for 16820?
16820 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 16820, you need to look up a specific street address to get them.
What city is 16820?
16820 is assigned to Aaronsburg, 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.