ZIP Code 20187 — Warrenton, VA
20187 is a standard (street delivery) ZIP code serving Warrenton, Virginia, in Fauquier 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 20187 at a glance
| ZIP code | 20187 |
|---|---|
| Primary city | Warrenton |
| State | Virginia (VA) |
| County | Fauquier FIPS 51061 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 18,980 |
| Coordinates | 38.718460, -77.742750 |
How ZIP+4 works in 20187
The four digits after the hyphen encode a delivery segment inside 20187. 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 20187 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.
Other ZIP codes in Warrenton
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 20187.
| ZIP | City | Distance |
|---|---|---|
| 20186 | Warrenton, VA | 5.7 mi |
| 20137 | Broad Run, VA | 6.1 mi |
| 20155 | Gainesville, VA | 8.9 mi |
| 20119 | Catlett, VA | 9.1 mi |
| 20136 | Bristow, VA | 10.2 mi |
| 22728 | Midland, VA | 10.2 mi |
| 22724 | Jeffersonton, VA | 10.7 mi |
| 20181 | Nokesville, VA | 10.8 mi |
| 20198 | The Plains, VA | 10.9 mi |
| 20115 | Marshall, VA | 11 mi |
| 22712 | Bealeton, VA | 11.2 mi |
| 20169 | Haymarket, VA | 11.8 mi |
Questions about 20187
What is the ZIP+4 code for 20187?
20187 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 20187, you need to look up a specific street address to get them.
What city is 20187?
20187 is assigned to Warrenton, Virginia, in Fauquier 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.