ZIP Code 05851 — Lyndonville, VT
05851 is a standard (street delivery) ZIP code serving Lyndonville, Vermont, in Caledonia 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 05851 at a glance
| ZIP code | 05851 |
|---|---|
| Primary city | Lyndonville |
| State | Vermont (VT) |
| County | Caledonia FIPS 50005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 6,024 |
| Coordinates | 44.552970, -72.057320 |
How ZIP+4 works in 05851
The four digits after the hyphen encode a delivery segment inside 05851. 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 05851 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 05851.
| ZIP | City | Distance |
|---|---|---|
| 05850 | Lyndon Center, VT | 1.2 mi |
| 05866 | Sheffield, VT | 6.8 mi |
| 05832 | East Burke, VT | 7.8 mi |
| 05867 | Sutton, VT | 7.8 mi |
| 05828 | Danville, VT | 8.6 mi |
| 05842 | Greensboro Bend, VT | 9.4 mi |
| 05836 | East Hardwick, VT | 9.8 mi |
| 05871 | West Burke, VT | 10.4 mi |
| 05819 | Saint Johnsbury, VT | 10.8 mi |
| 05839 | Glover, VT | 11.3 mi |
| 05824 | Concord, VT | 12.4 mi |
| 05858 | North Concord, VT | 12.5 mi |
Questions about 05851
What is the ZIP+4 code for 05851?
05851 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 05851, you need to look up a specific street address to get them.
What city is 05851?
05851 is assigned to Lyndonville, Vermont, in Caledonia 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.