ZIP Code 38504 — Allardt, TN
38504 is a standard (street delivery) ZIP code serving Allardt, Tennessee, in Fentress 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 38504 at a glance
| ZIP code | 38504 |
|---|---|
| Primary city | Allardt |
| State | Tennessee (TN) |
| County | Fentress FIPS 47049 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 689 |
| Coordinates | 36.393140, -84.735280 |
How ZIP+4 works in 38504
The four digits after the hyphen encode a delivery segment inside 38504. 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 38504 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 38504.
| ZIP | City | Distance |
|---|---|---|
| 37733 | Rugby, TN | 3.4 mi |
| 37732 | Elgin, TN | 7.5 mi |
| 37872 | Sunbright, TN | 9.1 mi |
| 37852 | Robbins, TN | 10.1 mi |
| 38556 | Jamestown, TN | 10.6 mi |
| 37755 | Helenwood, TN | 11.5 mi |
| 37841 | Oneida, TN | 13.2 mi |
| 37726 | Deer Lodge, TN | 14.2 mi |
| 38577 | Pall Mall, TN | 16.7 mi |
| 37770 | Lancing, TN | 17.4 mi |
| 38565 | Grimsley, TN | 17.7 mi |
| 37756 | Huntsville, TN | 19.3 mi |
Questions about 38504
What is the ZIP+4 code for 38504?
38504 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 38504, you need to look up a specific street address to get them.
What city is 38504?
38504 is assigned to Allardt, Tennessee, in Fentress 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.