ZIP Code 37727 — Del Rio, TN
37727 is a standard (street delivery) ZIP code serving Del Rio, 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 37727 at a glance
| ZIP code | 37727 |
|---|---|
| Primary city | Del Rio |
| State | Tennessee (TN) |
| County | Cocke FIPS 47029 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 1,936 |
| Coordinates | 35.888850, -83.006510 |
How ZIP+4 works in 37727
The four digits after the hyphen encode a delivery segment inside 37727. 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 37727 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 37727.
| ZIP | City | Distance |
|---|---|---|
| 37753 | Hartford, TN | 6.9 mi |
| 28743 | Hot Springs, NC | 8.1 mi |
| 37843 | Parrottsville, TN | 8.8 mi |
| 37821 | Newport, TN | 12.2 mi |
| 37722 | Cosby, TN | 13.9 mi |
| 37743 | Greeneville, TN | 14.9 mi |
| 37713 | Bybee, TN | 15.6 mi |
| 28753 | Marshall, NC | 17.2 mi |
| 28785 | Waynesville, NC | 17.4 mi |
| 28721 | Clyde, NC | 18.1 mi |
| 37809 | Midway, TN | 18.4 mi |
| 37818 | Mosheim, TN | 20.6 mi |
Questions about 37727
What is the ZIP+4 code for 37727?
37727 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 37727, you need to look up a specific street address to get them.
What city is 37727?
37727 is assigned to Del Rio, 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.