ZIP Code 03813 — Center Conway, NH
03813 is a standard (street delivery) ZIP code serving Center Conway, New Hampshire, in Carroll 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 03813 at a glance
| ZIP code | 03813 |
|---|---|
| Primary city | Center Conway |
| State | New Hampshire (NH) |
| County | Carroll FIPS 33003 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,273 |
| Coordinates | 44.094080, -71.045730 |
How ZIP+4 works in 03813
The four digits after the hyphen encode a delivery segment inside 03813. 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 03813 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 03813.
| ZIP | City | Distance |
|---|---|---|
| 03845 | Intervale, NH | 4.1 mi |
| 03847 | Kearsarge, NH | 4.1 mi |
| 04037 | Fryeburg, ME | 4.8 mi |
| 03860 | North Conway, NH | 5.3 mi |
| 03846 | Jackson, NH | 9.4 mi |
| 03838 | Glen, NH | 9.7 mi |
| 04051 | Lovell, ME | 10.3 mi |
| 03812 | Bartlett, NH | 12.5 mi |
| 04010 | Brownfield, ME | 12.8 mi |
| 03818 | Conway, NH | 13.2 mi |
| 03832 | Eaton Center, NH | 13.2 mi |
| 04231 | Stoneham, ME | 14.1 mi |
Questions about 03813
What is the ZIP+4 code for 03813?
03813 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 03813, you need to look up a specific street address to get them.
What city is 03813?
03813 is assigned to Center Conway, New Hampshire, in Carroll 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.