ZIP Code 42131 — Etoile, KY
42131 is a standard (street delivery) ZIP code serving Etoile, Kentucky, in Barren 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 42131 at a glance
| ZIP code | 42131 |
|---|---|
| Primary city | Etoile |
| State | Kentucky (KY) |
| County | Barren FIPS 21009 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 72 |
| Coordinates | 36.827340, -85.909150 |
How ZIP+4 works in 42131
The four digits after the hyphen encode a delivery segment inside 42131. 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 42131 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 42131.
| ZIP | City | Distance |
|---|---|---|
| 42123 | Austin, KY | 4.8 mi |
| 42157 | Mount Hermon, KY | 5.7 mi |
| 42133 | Fountain Run, KY | 7.7 mi |
| 42156 | Lucas, KY | 8.1 mi |
| 42141 | Glasgow, KY | 8.4 mi |
| 42130 | Eighty Eight, KY | 9.8 mi |
| 42166 | Summer Shade, KY | 11.3 mi |
| 42153 | Holland, KY | 12.5 mi |
| 42140 | Gamaliel, KY | 12.6 mi |
| 42124 | Beaumont, KY | 14.7 mi |
| 42167 | Tompkinsville, KY | 15 mi |
| 42164 | Scottsville, KY | 15.5 mi |
Questions about 42131
What is the ZIP+4 code for 42131?
42131 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 42131, you need to look up a specific street address to get them.
What city is 42131?
42131 is assigned to Etoile, Kentucky, in Barren 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.