ZIP Code 03278 — Warner, NH
03278 is a standard (street delivery) ZIP code serving Warner, New Hampshire, in Merrimack 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 03278 at a glance
| ZIP code | 03278 |
|---|---|
| Primary city | Warner |
| State | New Hampshire (NH) |
| County | Merrimack FIPS 33013 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 3,079 |
| Coordinates | 43.293130, -71.829340 |
How ZIP+4 works in 03278
The four digits after the hyphen encode a delivery segment inside 03278. 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 03278 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 03278.
| ZIP | City | Distance |
|---|---|---|
| 03273 | South Sutton, NH | 4.8 mi |
| 03260 | North Sutton, NH | 6.7 mi |
| 03221 | Bradford, NH | 7.1 mi |
| 03268 | Salisbury, NH | 7.3 mi |
| 03303 | Concord, NH | 7.9 mi |
| 03242 | Henniker, NH | 8.3 mi |
| 03229 | Contoocook, NH | 9.4 mi |
| 03255 | Newbury, NH | 10.1 mi |
| 03233 | Elkins, NH | 10.4 mi |
| 03216 | Andover, NH | 10.7 mi |
| 03257 | New London, NH | 11.8 mi |
| 03287 | Wilmot, NH | 11.8 mi |
Questions about 03278
What is the ZIP+4 code for 03278?
03278 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 03278, you need to look up a specific street address to get them.
What city is 03278?
03278 is assigned to Warner, New Hampshire, in Merrimack 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.