How far is DeKalb County, GA from Marietta, GA?
Distance by Flight
Shortest distance between DeKalb County and Marietta is 22.38 miles (36.02 km).
Flight distance from DeKalb County, GA to Marietta, GA is 22.38 miles. Estimated flight time is 00 hours 03 minutes.
Driving distance
The driving distance from DeKalb County, Georgia to Marietta, Georgia is: 30.71 miles (49.43 km) by car.
Driving from DeKalb County to Marietta will take approximately 00 hours 38 minutes.
#1 DeKalb County
County in Georgia, United States
| Population | 762009 |
|---|---|
| GPS Coordinates | 33°46'18"N 84°13'35"W |
| Latitude | 33.7715300 |
| Longitude | -84.2264100 |
| Altitude | 277 |
| Country | United States |
#2 Marietta
The most populous city in Cobb County, Georgia. It is located in the northern part of the state. Marietta is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Marietta Museum of History and the Marietta Cobb Museum of Art.
| Population | 60786 |
|---|---|
| GPS Coordinates | 33°57'9"N 84°32'60"W |
| Latitude | 33.9526000 |
| Longitude | -84.5499300 |
| Altitude | 344 |
| Country | United States |
Ending point in Marietta: West Park Square (-84.550173,33.952601)
Estimated Travel Time Between DeKalb County and Marietta
The distance between DeKalb County and Marietta is 49 km if you choose to drive by road. You can go 00 hours 32 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
There is no time difference between DeKalb County and Marietta. The current time is 08:59:20.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 01 hours 01 minutes |
| 40 mph (64.37 km/h) | 00 hours 46 minutes |
| 50 mph (80.47 km/h) | 00 hours 36 minutes |
| 60 mph (96.56 km/h) | 00 hours 30 minutes |
| 70 mph (112.65 km/h) | 00 hours 26 minutes |
| 75 mph (120.7 km/h) | 00 hours 24 minutes |
| 80 mph (128.75 km/h) | 00 hours 22 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 4.1 liters (1.08 gallon) of gas to cover the route between DeKalb County and Marietta.
The estimated cost of gas to go from DeKalb County to Marietta is $3.25 (diesel $4.42).
Georgia gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3 | $3.43 | $3.82 | $4.08 |
| Total | $3.25 | $3.72 | $4.14 | $4.42 |
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price (in Georgia ) per gallon of daily gas for calculations is $2.995 (Diesel $4.079) /gallon. Last changed prices on December 29, 2025.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between DeKalb County and Marietta (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
