ZIP Code 37309 — Calhoun, TN
37309 is a standard (street delivery) ZIP code serving Calhoun, Tennessee, in McMinn 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 37309 at a glance
| ZIP code | 37309 |
|---|---|
| Primary city | Calhoun |
| State | Tennessee (TN) |
| County | McMinn FIPS 47107 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 2,136 |
| Coordinates | 35.305950, -84.744530 |
How ZIP+4 works in 37309
The four digits after the hyphen encode a delivery segment inside 37309. 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 37309 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 37309.
| ZIP | City | Distance |
|---|---|---|
| 37310 | Charleston, TN | 3.5 mi |
| 37370 | Riceville, TN | 4.4 mi |
| 37325 | Delano, TN | 8.5 mi |
| 37312 | Cleveland, TN | 9 mi |
| 37336 | Georgetown, TN | 10.7 mi |
| 37303 | Athens, TN | 11 mi |
| 37307 | Benton, TN | 11.8 mi |
| 37331 | Etowah, TN | 11.9 mi |
| 37322 | Decatur, TN | 13.7 mi |
| 37308 | Birchwood, TN | 14.5 mi |
| 37323 | Cleveland, TN | 15.1 mi |
| 37361 | Ocoee, TN | 16 mi |
Questions about 37309
What is the ZIP+4 code for 37309?
37309 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 37309, you need to look up a specific street address to get them.
What city is 37309?
37309 is assigned to Calhoun, Tennessee, in McMinn 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.