a 2006 survey by the metro atlanta chamber of commerce counted 140 cities and towns in the 28‑county metropolitan statistical area in mid-2005. nine cities – johns creek (2006), milton (2006), chattahoochee hills (2007), dunwoody (2008), peachtree corners (2012), brookhaven (2012), tucker (2016), stonecrest (2016) and south fulton (2017) – have incorporated since then, following the lead of sandy springs in 2005.