I don't think it's all that unusual for suburbs and small towns to have a central square....several of Atlanta's suburbs have squares:
Marietta Square

Marietta Square on Flickr - Photo Sharing! (http://www.flickr.com/photos/amberlrhea/2059832385/in/set-72157603281255560/ - broken link)
IMG_7899 on Flickr - Photo Sharing! (http://www.flickr.com/photos/choogstede/379744057/ - broken link)
Decatur Square

Decatur GA 18 on Flickr - Photo Sharing! (http://www.flickr.com/photos/nedster/2599055718/ - broken link)
Decatur on the Square on Flickr - Photo Sharing! (http://www.flickr.com/photos/tmac0381/3265266702/ - broken link)
Woodstock Town Square
Woodstock City Park on Flickr - Photo Sharing! (http://www.flickr.com/photos/64171167@N00/3252962727/ - broken link)
Suwanee Town Green
Suwanee Town Green on Flickr - Photo Sharing! (http://www.flickr.com/photos/gwinnettparksandsports/1202703998/ - broken link)
McDonough Square
McDonough, Georgia on Flickr - Photo Sharing! (http://www.flickr.com/photos/fullcircle/128195259/ - broken link)
Covington Town Square
Statue in town square on Flickr - Photo Sharing! (http://www.flickr.com/photos/rustytanton/2151516273/ - broken link)
Gainesville GA Town Square

Downtown Gainesville: No sign of tornado damage today, but never forgotten. on Flickr - Photo Sharing! (http://www.flickr.com/photos/7691639@N04/457123409/ - broken link)
Downtown Gainesville Square on Flickr - Photo Sharing! (http://www.flickr.com/photos/24242246@N06/2330663625/ - broken link)