ZIP Code 17720 — Antes Fort, PA
17720 is a standard (street delivery) ZIP code serving Antes Fort, Pennsylvania, in Lycoming 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 17720 at a glance
| ZIP code | 17720 |
|---|---|
| Primary city | Antes Fort |
| State | Pennsylvania (PA) |
| County | Lycoming FIPS 42081 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 250 |
| Coordinates | 41.180460, -77.205030 |
How ZIP+4 works in 17720
The four digits after the hyphen encode a delivery segment inside 17720. 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 17720 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 17720.
| ZIP | City | Distance |
|---|---|---|
| 17740 | Jersey Shore, PA | 4.7 mi |
| 17744 | Linden, PA | 4.9 mi |
| 17721 | Avis, PA | 5.9 mi |
| 17702 | Williamsport, PA | 6.6 mi |
| 17748 | Mcelhattan, PA | 7.8 mi |
| 17779 | Woolrich, PA | 9.3 mi |
| 17810 | Allenwood, PA | 10.4 mi |
| 17747 | Loganton, PA | 11.3 mi |
| 17728 | Cogan Station, PA | 11.9 mi |
| 17752 | Montgomery, PA | 14.7 mi |
| 17856 | New Columbia, PA | 14.8 mi |
| 17745 | Lock Haven, PA | 16.1 mi |
Questions about 17720
What is the ZIP+4 code for 17720?
17720 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 17720, you need to look up a specific street address to get them.
What city is 17720?
17720 is assigned to Antes Fort, Pennsylvania, in Lycoming 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.