ZIP Code 37643 — Elizabethton, TN
37643 is a standard (street delivery) ZIP code serving Elizabethton, Tennessee, in Carter 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 37643 at a glance
| ZIP code | 37643 |
|---|---|
| Primary city | Elizabethton |
| State | Tennessee (TN) |
| County | Carter FIPS 47019 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 34,120 |
| Coordinates | 36.375130, -82.137290 |
How ZIP+4 works in 37643
The four digits after the hyphen encode a delivery segment inside 37643. 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 37643 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 37643.
| ZIP | City | Distance |
|---|---|---|
| 37618 | Bluff City, TN | 7.4 mi |
| 37694 | Watauga, TN | 7.7 mi |
| 37658 | Hampton, TN | 7.8 mi |
| 37640 | Butler, TN | 9.4 mi |
| 37682 | Milligan, TN | 10 mi |
| 37601 | Johnson City, TN | 10.6 mi |
| 37620 | Bristol, TN | 12.3 mi |
| 37686 | Piney Flats, TN | 12.5 mi |
| 37687 | Roan Mountain, TN | 13.2 mi |
| 37614 | Johnson City, TN | 13.8 mi |
| 37604 | Johnson City, TN | 14.6 mi |
| 37692 | Unicoi, TN | 16.1 mi |
Questions about 37643
What is the ZIP+4 code for 37643?
37643 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 37643, you need to look up a specific street address to get them.
What city is 37643?
37643 is assigned to Elizabethton, Tennessee, in Carter 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.