Yep, just make sure you're in Cherokee county and not within the city limits of Woodstock. You can find the zoning of your lot using this:
http://gis.cherokeega.com/
When it loads, go to the upper right hand corner and use the drop-down list to select "county zoning". The areas in white...
This is the way I read it: you can have up to 8 hens on any lot that is 20,000 sq ft or more (that's 0.46 acres) as long as you follow the rules on coop/run size, and location from your property lines.
I believe the one animal per acre provision is for livestock such as horses, goats, etc...
The Cherokee County zoning ordinance has a whole section devoted to chickens. Here's the scoop:
7.7-24
a. The raising and keeping of livestock for non-commercial purposes (i.e. personal pleasure) shall be allowed in all residential districts on tracts of two (2) acres or more, but limited to...