RV PARK I75

You could try Atlanta South RV Resort.
http://atlantasouthrvresort.com/
We stayed there and it was fine.

I'm not sure I understand your question perfectly: are you looking for a site near Atlanta (north or south of the city), or just one south of the city?

In the first case, Red Top Mountain State Park looks to me like a good possibility for an overnight stay, about 35-40 miles from the middle of Atlanta and with easy access to the interstate. I haven't been there personally.

Yes we always stayed at the KOA in cartersville georgia and they closed this year so we can stay on the north are south side of atlanta on the way to florida

High Falls SP is good south of the city. There are all sorts of RV parks on Altoona Lake north of the city.

I second High Falls SP. We're close to there and spend weekends there often. About a mile further from I75 is Indian Springs SP. There is also a Flying J with separate RV parking area if you are interested in that type of overnight stop. And, there is a KOA a little more south in Forsyth GA (but I know nothing about it).

High Falls SP for sure. Red Top SP can be an issue for big rigs, it's hard to navigate and get a level spot.

Yep High Falls, Riverside Campground is excellent. Water and electric plus laundry facility.

IB853347201 wrote:
You could try Atlanta South RV Resort.
http://atlantasouthrvresort.com/
We stayed there and it was fine.

We have stayed there a couple of times also... it's an OK place.
Easy off/on I-75

Carrols, meat market that has a small RV park, and if you stay there, you get a discount to the store.

mimosa wrote:
...north are south...

Said it twice now, still doesn't make sense.