ZIP Code 37221 — Nashville, TN
37221 is a standard (street delivery) ZIP code serving Nashville, Tennessee, in Davidson 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 37221 at a glance
| ZIP code | 37221 |
|---|---|
| Primary city | Nashville |
| State | Tennessee (TN) |
| County | Davidson FIPS 47037 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 41,935 |
| Coordinates | 36.059910, -86.971890 |
How ZIP+4 works in 37221
The four digits after the hyphen encode a delivery segment inside 37221. 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 37221 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.
Other ZIP codes in Nashville
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 37221.
| ZIP | City | Distance |
|---|---|---|
| 37143 | Pegram, TN | 5.9 mi |
| 37069 | Franklin, TN | 6.2 mi |
| 37205 | Nashville, TN | 6.5 mi |
| 37209 | Nashville, TN | 7.3 mi |
| 37215 | Nashville, TN | 7.8 mi |
| 37082 | Kingston Springs, TN | 8.4 mi |
| 37062 | Fairview, TN | 10.3 mi |
| 37220 | Nashville, TN | 10.6 mi |
| 37212 | Nashville, TN | 10.8 mi |
| 37232 | Nashville, TN | 11 mi |
| 37218 | Nashville, TN | 11.2 mi |
| 37027 | Brentwood, TN | 11.3 mi |
Questions about 37221
What is the ZIP+4 code for 37221?
37221 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 37221, you need to look up a specific street address to get them.
What city is 37221?
37221 is assigned to Nashville, Tennessee, in Davidson 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.