ZIP Code 37381 — Spring City, TN
37381 is a standard (street delivery) ZIP code serving Spring City, Tennessee, in Rhea 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 37381 at a glance
| ZIP code | 37381 |
|---|---|
| Primary city | Spring City |
| State | Tennessee (TN) |
| County | Rhea FIPS 47143 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 10,711 |
| Coordinates | 35.685330, -84.877500 |
How ZIP+4 works in 37381
The four digits after the hyphen encode a delivery segment inside 37381. 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 37381 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 37381.
| ZIP | City | Distance |
|---|---|---|
| 37337 | Grandview, TN | 7 mi |
| 37332 | Evensville, TN | 7.9 mi |
| 37880 | Ten Mile, TN | 12 mi |
| 37322 | Decatur, TN | 13.5 mi |
| 37321 | Dayton, TN | 14.6 mi |
| 38555 | Crossville, TN | 15.1 mi |
| 37854 | Rockwood, TN | 16.2 mi |
| 38572 | Crossville, TN | 17.9 mi |
| 37826 | Niota, TN | 18.4 mi |
| 37723 | Crab Orchard, TN | 19.2 mi |
| 37367 | Pikeville, TN | 19.5 mi |
| 37303 | Athens, TN | 21.5 mi |
Questions about 37381
What is the ZIP+4 code for 37381?
37381 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 37381, you need to look up a specific street address to get them.
What city is 37381?
37381 is assigned to Spring City, Tennessee, in Rhea 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.