ZIP Code 05058 — Post Mills, VT
05058 is a standard (street delivery) ZIP code serving Post Mills, Vermont, in Orange 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 05058 at a glance
| ZIP code | 05058 |
|---|---|
| Primary city | Post Mills |
| State | Vermont (VT) |
| County | Orange FIPS 50017 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 128 |
| Coordinates | 43.879170, -72.269990 |
How ZIP+4 works in 05058
The four digits after the hyphen encode a delivery segment inside 05058. 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 05058 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 05058.
| ZIP | City | Distance |
|---|---|---|
| 05075 | Thetford Center, VT | 2.5 mi |
| 05083 | West Fairlee, VT | 2.7 mi |
| 05045 | Fairlee, VT | 4.3 mi |
| 05070 | South Strafford, VT | 4.8 mi |
| 05072 | Strafford, VT | 5.7 mi |
| 05043 | East Thetford, VT | 5.8 mi |
| 05079 | Vershire, VT | 5.9 mi |
| 05055 | Norwich, VT | 8.8 mi |
| 03768 | Lyme, NH | 9.2 mi |
| 05065 | Sharon, VT | 9.5 mi |
| 05033 | Bradford, VT | 10 mi |
| 03777 | Orford, NH | 10.2 mi |
Questions about 05058
What is the ZIP+4 code for 05058?
05058 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 05058, you need to look up a specific street address to get them.
What city is 05058?
05058 is assigned to Post Mills, Vermont, in Orange 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.