Yes!
I had a lime tree (nicknamed Limey) for years that I kept in a big pot. In October when the overnight temps got in the mid-40s I'd bring him in to the garage where he'd stay until it warmed up again in late March. If it was nice during the day in Feb or early March, I'd drag him out in to the driveway for some sun. The lack of sunlight in the garage never hurt him.
Apparently some lime trees are grown more for their flower and scent than the fruit itself. Limey was one of those. The scent was extremely strong and very pleasant but I wanted fruit. So now Limey sleeps with the fishes and has been replaced by Lemmy (he's a lemon tree). I can already tell he's stronger then Limey was and probably has about 30 lemons on him. He's already sprouting new leaf growth and will begin flowering for the second time this year- I'm not sure if that's a good thing.
To sum up, yes you can have citrus plants north of GA. Just don't put them in the ground. Keep them in a big pot so you can move them inside for winter and give them a nickname. The nickname is crucial.