ZIP Code 37066 — Gallatin, TN
37066 is a standard (street delivery) ZIP code serving Gallatin, Tennessee, in Sumner 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 37066 at a glance
| ZIP code | 37066 |
|---|---|
| Primary city | Gallatin |
| State | Tennessee (TN) |
| County | Sumner FIPS 47165 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 64,650 |
| Coordinates | 36.398710, -86.455940 |
How ZIP+4 works in 37066
The four digits after the hyphen encode a delivery segment inside 37066. 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 37066 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 37066.
| ZIP | City | Distance |
|---|---|---|
| 37031 | Castalian Springs, TN | 8.7 mi |
| 37075 | Hendersonville, TN | 9.4 mi |
| 37048 | Cottontown, TN | 9.8 mi |
| 37022 | Bethpage, TN | 10.7 mi |
| 37148 | Portland, TN | 12.6 mi |
| 37087 | Lebanon, TN | 13.4 mi |
| 37188 | White House, TN | 13.7 mi |
| 37138 | Old Hickory, TN | 13.9 mi |
| 37122 | Mount Juliet, TN | 15.3 mi |
| 37072 | Goodlettsville, TN | 16.3 mi |
| 37049 | Cross Plains, TN | 16.6 mi |
| 37115 | Madison, TN | 16.7 mi |
Questions about 37066
What is the ZIP+4 code for 37066?
37066 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 37066, you need to look up a specific street address to get them.
What city is 37066?
37066 is assigned to Gallatin, Tennessee, in Sumner 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.