ZIP Code 37709 — Blaine, TN
37709 is a standard (street delivery) ZIP code serving Blaine, Tennessee, in Grainger 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 37709 at a glance
| ZIP code | 37709 |
|---|---|
| Primary city | Blaine |
| State | Tennessee (TN) |
| County | Grainger FIPS 47057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 4,177 |
| Coordinates | 36.167980, -83.664790 |
How ZIP+4 works in 37709
The four digits after the hyphen encode a delivery segment inside 37709. 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 37709 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 37709.
| ZIP | City | Distance |
|---|---|---|
| 37848 | Powder Springs, TN | 4.9 mi |
| 37779 | Luttrell, TN | 6 mi |
| 37806 | Mascot, TN | 6.5 mi |
| 37820 | New Market, TN | 8 mi |
| 37721 | Corryton, TN | 8.4 mi |
| 37871 | Strawberry Plains, TN | 8.4 mi |
| 37861 | Rutledge, TN | 9.9 mi |
| 37888 | Washburn, TN | 10.3 mi |
| 37807 | Maynardville, TN | 11 mi |
| 37924 | Knoxville, TN | 11.9 mi |
| 37760 | Jefferson City, TN | 11.9 mi |
| 37764 | Kodak, TN | 13.9 mi |
Questions about 37709
What is the ZIP+4 code for 37709?
37709 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 37709, you need to look up a specific street address to get them.
What city is 37709?
37709 is assigned to Blaine, Tennessee, in Grainger 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.