Posted 29 July 2007 - 12:24 PM
A good point was raised that Cobb is the second most dense county in the metro, and over 95% of its land area is outside the perimeter. Gwinnett has overtaken DeKalb as the second county in population and is entirely OTP. Clayton is one the metros smallest counties in land area and has one of the highest densities, the only large area left belown Jonesboro, and has an even smaller area ITP. As for Fulton, South Fulton is the only low density part of the county. North Fulton is rapidly filling in, Sandy Springs(majority north of the perimeter), Roswell, Alpharetta, Johns Creek and Milton occupy the majority of the land area. Alpharetta, Johns Creek and Milton have a great deal of land that is low density, with Alpharetta and Johns Creek increasingly getting denser. Milton incoroporated with the principle of maintaining low density that is shared with the remaining of unincorporated North Fulton. Chattahoochee Hill Country used maintaining low density as a platforn for incorpation, along with a local voice and control of development. The perimeter became obselete as a boundary for urban growth by the early 70's.
Virtually all of the residential areas ITP are suburban in nature and share density with the 50-70's suburban growth that occurred in Cobb and Clayton OTP and the 70's to present suburban growth in Gwinnett and North Fulton. Small land areas of Georgia counties have resulted in several non-core counties having high average densities-Douglas, Fayette, Rockdale, Newton, Barrow, Spalding and Forsyth are among Georgia's most densely populated and Henry, Paulding, and Walton are well on their way to joing the density list. Cherokee, Bartow, Coweta and Carroll have relatively large land areas coupled with sizable and growing population. Beyond these counties come nine low density counties that could sustain a great deal of growth with becoming dense and large in population for several decades to come.
Also, the perimeter entered the city of Atlanta on the west side and stayed close in its pass across the Tri-cities, thus some of the core was always OTP. The metro grew to include areas that are were already developing around a strong county seat. Cartersville-Bartow, Griffin-Spalding, Carrollton-Carroll, Newnan-Coweta, Covington-Newton, etc. already had a strong employment base, population growth, and retail development when they were absorbed into the metro area during the 1970's and 80's. Only Haralson, Meriwether, Pike, Lamar, Butts, Pickens, Dawson, Heard, and Jasper counties are extensively rural and anyone who has ventured up 400 into Dawson and 575/515 into Pickens can see the suburbanization taken place there.