ZIP Code 03583 — Jefferson, NH
03583 is a standard (street delivery) ZIP code serving Jefferson, New Hampshire, in Coos 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 03583 at a glance
| ZIP code | 03583 |
|---|---|
| Primary city | Jefferson |
| State | New Hampshire (NH) |
| County | Coos FIPS 33007 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,013 |
| Coordinates | 44.401480, -71.458300 |
How ZIP+4 works in 03583
The four digits after the hyphen encode a delivery segment inside 03583. 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 03583 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 03583.
| ZIP | City | Distance |
|---|---|---|
| 03584 | Lancaster, NH | 7.2 mi |
| 03595 | Twin Mountain, NH | 7.4 mi |
| 03575 | Bretton Woods, NH | 8 mi |
| 03598 | Whitefield, NH | 8.7 mi |
| 03593 | Randolph, NH | 9.9 mi |
| 03574 | Bethlehem, NH | 12.3 mi |
| 05904 | Gilman, VT | 12.3 mi |
| 05906 | Lunenburg, VT | 13.6 mi |
| 03582 | Groveton, NH | 13.6 mi |
| 03570 | Berlin, NH | 14.2 mi |
| 03581 | Gorham, NH | 16.5 mi |
| 03561 | Littleton, NH | 18 mi |
Questions about 03583
What is the ZIP+4 code for 03583?
03583 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 03583, you need to look up a specific street address to get them.
What city is 03583?
03583 is assigned to Jefferson, New Hampshire, in Coos 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.