ZIP Code 03840 — Greenland, NH
03840 is a standard (street delivery) ZIP code serving Greenland, New Hampshire, in Rockingham 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 03840 at a glance
| ZIP code | 03840 |
|---|---|
| Primary city | Greenland |
| State | New Hampshire (NH) |
| County | Rockingham FIPS 33015 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,106 |
| Coordinates | 43.038530, -70.848030 |
How ZIP+4 works in 03840
The four digits after the hyphen encode a delivery segment inside 03840. 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 03840 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 03840.
| ZIP | City | Distance |
|---|---|---|
| 03885 | Stratham, NH | 3.1 mi |
| 03801 | Portsmouth, NH | 3.2 mi |
| 03862 | North Hampton, NH | 4.2 mi |
| 03870 | Rye, NH | 4.7 mi |
| 03871 | Rye Beach, NH | 5.5 mi |
| 03857 | Newmarket, NH | 5.6 mi |
| 03856 | Newfields, NH | 6 mi |
| 03824 | Durham, NH | 6.5 mi |
| 03854 | New Castle, NH | 6.7 mi |
| 03842 | Hampton, NH | 6.9 mi |
| 03904 | Kittery, ME | 7.7 mi |
| 03844 | Hampton Falls, NH | 7.9 mi |
Questions about 03840
What is the ZIP+4 code for 03840?
03840 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 03840, you need to look up a specific street address to get them.
What city is 03840?
03840 is assigned to Greenland, New Hampshire, in Rockingham 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.