ZIP Code 37821 — Newport, TN
37821 is a standard (street delivery) ZIP code serving Newport, Tennessee, in Cocke 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 37821 at a glance
| ZIP code | 37821 |
|---|---|
| Primary city | Newport |
| State | Tennessee (TN) |
| County | Cocke FIPS 47029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 22,909 |
| Coordinates | 35.976880, -83.195060 |
How ZIP+4 works in 37821
The four digits after the hyphen encode a delivery segment inside 37821. 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 37821 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 37821.
| ZIP | City | Distance |
|---|---|---|
| 37843 | Parrottsville, TN | 8.5 mi |
| 37713 | Bybee, TN | 8.6 mi |
| 37890 | White Pine, TN | 9.1 mi |
| 37725 | Dandridge, TN | 11.4 mi |
| 37753 | Hartford, TN | 11.9 mi |
| 37722 | Cosby, TN | 12 mi |
| 37727 | Del Rio, TN | 12.2 mi |
| 37813 | Morristown, TN | 14.3 mi |
| 37810 | Mohawk, TN | 14.9 mi |
| 37809 | Midway, TN | 15.1 mi |
| 37877 | Talbott, TN | 16.8 mi |
| 37760 | Jefferson City, TN | 17.5 mi |
Questions about 37821
What is the ZIP+4 code for 37821?
37821 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 37821, you need to look up a specific street address to get them.
What city is 37821?
37821 is assigned to Newport, Tennessee, in Cocke 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.