According to safewise's FBI reports there's several great suburban communities that are consider very safe. If you're relocating to Atlanta then chances are safety is a huge concern. I don't think anyone wants to live in an unsafe community.
Roswell, GA -
One of the closest, most diverse (in every sense of the word) real estate in metro Atlanta. It's home to the ultra-high end, some of the best school and yet still touches Atlanta. Roswell has 1.15 violent crimes per 1,000 people and 18.75 property damage crimes per 1,000. If you're looking for a great home in Roswell, then you're also looking at one of the safest communities.
Flowery Branch, GA
Sometimes areas that are on the 'fringe" of metro Atlanta can get a bad rep for crime. Yet year to date there's not been a violent crime at all in Flowery Branch. Homes for sale in Flowery Branch should post this as a marketing item. There are 12.14 property related crimes for ever 1,000. You can see how being 35 or so minutes from Atlanta can reduce the crime rate.
Johns Creek, GA
A community just north of Roswell and one of the most popular up and coming community. Not necessarily the most affordable community in metro Atlanta however it does have the honor of being the safest. With only .33 violent crimes per 1,000 and 7.05 property related crimes per 1,000, John Creak real estate is some of the safest.