ZIP Code 70345 — Cut Off, LA
70345 is a standard (street delivery) ZIP code serving Cut Off, Louisiana, in Lafourche 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 70345 at a glance
| ZIP code | 70345 |
|---|---|
| Primary city | Cut Off |
| State | Louisiana (LA) |
| County | Lafourche FIPS 22057 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 8,344 |
| Coordinates | 29.518150, -90.237630 |
How ZIP+4 works in 70345
The four digits after the hyphen encode a delivery segment inside 70345. 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 70345 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 70345.
| ZIP | City | Distance |
|---|---|---|
| 70373 | Larose, LA | 8.2 mi |
| 70354 | Galliano, LA | 8.7 mi |
| 70036 | Barataria, LA | 14.1 mi |
| 70067 | Lafitte, LA | 16.1 mi |
| 70357 | Golden Meadow, LA | 16.6 mi |
| 70355 | Gheens, LA | 16.8 mi |
| 70374 | Lockport, LA | 16.9 mi |
| 70377 | Montegut, LA | 17.1 mi |
| 70343 | Bourg, LA | 19.7 mi |
| 70375 | Mathews, LA | 21.5 mi |
| 70070 | Luling, LA | 22.1 mi |
| 70072 | Marrero, LA | 22.5 mi |
Questions about 70345
What is the ZIP+4 code for 70345?
70345 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 70345, you need to look up a specific street address to get them.
What city is 70345?
70345 is assigned to Cut Off, Louisiana, in Lafourche 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.