ZIP Code 38221 — Big Sandy, TN
38221 is a standard (street delivery) ZIP code serving Big Sandy, Tennessee, in Benton 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 38221 at a glance
| ZIP code | 38221 |
|---|---|
| Primary city | Big Sandy |
| State | Tennessee (TN) |
| County | Benton FIPS 47005 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 3,098 |
| Coordinates | 36.245520, -88.036850 |
How ZIP+4 works in 38221
The four digits after the hyphen encode a delivery segment inside 38221. 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 38221 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 38221.
| ZIP | City | Distance |
|---|---|---|
| 38256 | Springville, TN | 6.8 mi |
| 38333 | Eva, TN | 9.3 mi |
| 37175 | Stewart, TN | 9.5 mi |
| 38236 | Mansfield, TN | 13.6 mi |
| 38320 | Camden, TN | 14.2 mi |
| 37178 | Tennessee Ridge, TN | 14.8 mi |
| 38222 | Buchanan, TN | 15.5 mi |
| 37185 | Waverly, TN | 16.3 mi |
| 38342 | Hollow Rock, TN | 17 mi |
| 38242 | Paris, TN | 17 mi |
| 37134 | New Johnsonville, TN | 17.5 mi |
| 37058 | Dover, TN | 18.3 mi |
Questions about 38221
What is the ZIP+4 code for 38221?
38221 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 38221, you need to look up a specific street address to get them.
What city is 38221?
38221 is assigned to Big Sandy, Tennessee, in Benton 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.