ZIP Code 30066 — Marietta, GA
30066 is a standard (street delivery) ZIP code serving Marietta, Georgia, in Cobb 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 30066 at a glance
| ZIP code | 30066 |
|---|---|
| Primary city | Marietta |
| State | Georgia (GA) |
| County | Cobb FIPS 13067 |
| ZIP type | Standard (street delivery) |
| Time zone | America/New_York |
| Population | 61,761 |
| Coordinates | 34.034000, -84.507980 |
How ZIP+4 works in 30066
The four digits after the hyphen encode a delivery segment inside 30066. 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 30066 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.
Other ZIP codes in Marietta
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 30066.
| ZIP | City | Distance |
|---|---|---|
| 30062 | Marietta, GA | 3.2 mi |
| 30144 | Kennesaw, GA | 4.8 mi |
| 30090 | Marietta, GA | 6 mi |
| 30068 | Marietta, GA | 6.2 mi |
| 30188 | Woodstock, GA | 6.6 mi |
| 30075 | Roswell, GA | 7 mi |
| 30189 | Woodstock, GA | 7.5 mi |
| 30067 | Marietta, GA | 7.5 mi |
| 30060 | Marietta, GA | 8.1 mi |
| 30152 | Kennesaw, GA | 8.4 mi |
| 30064 | Marietta, GA | 9.1 mi |
| 30102 | Acworth, GA | 9.4 mi |
Questions about 30066
What is the ZIP+4 code for 30066?
30066 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 30066, you need to look up a specific street address to get them.
What city is 30066?
30066 is assigned to Marietta, Georgia, in Cobb 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.