ZIP Code 37046 — College Grove, TN
37046 is a standard (street delivery) ZIP code serving College Grove, Tennessee, in Williamson 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 37046 at a glance
| ZIP code | 37046 |
|---|---|
| Primary city | College Grove |
| State | Tennessee (TN) |
| County | Williamson FIPS 47187 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 7,310 |
| Coordinates | 35.779950, -86.715820 |
How ZIP+4 works in 37046
The four digits after the hyphen encode a delivery segment inside 37046. 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 37046 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 37046.
| ZIP | City | Distance |
|---|---|---|
| 37060 | Eagleville, TN | 5 mi |
| 37014 | Arrington, TN | 7.3 mi |
| 37153 | Rockvale, TN | 9 mi |
| 37067 | Franklin, TN | 9.8 mi |
| 37034 | Chapel Hill, TN | 9.8 mi |
| 37174 | Spring Hill, TN | 11 mi |
| 37135 | Nolensville, TN | 11.1 mi |
| 37179 | Thompsons Station, TN | 11.3 mi |
| 37180 | Unionville, TN | 13.6 mi |
| 37128 | Murfreesboro, TN | 13.6 mi |
| 37027 | Brentwood, TN | 15.6 mi |
| 37064 | Franklin, TN | 15.7 mi |
Questions about 37046
What is the ZIP+4 code for 37046?
37046 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 37046, you need to look up a specific street address to get them.
What city is 37046?
37046 is assigned to College Grove, Tennessee, in Williamson 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.