 Atlanta ranks second in megachurches behind Houston.In contrast to some other Southern cities, Atlanta's large, and rapidly growing, Roman Catholic population is a trend which didn't take shape until the 1990s.The number of Catholics grew from 30,840 members in 1960 to 292,300 members in 1998 and to 900,000 members (69 Northern Georgia Counties covering an area of 7,150,000 people) in 2010, an increase of 207 percent.