Forsyth County is still among the top 50 fastest-growing counties in the country, but its rate of growth — once among the top five counties in the country — between 2010 and 2011 fell behind others, according to estimates released Wednesday by the U.S. Census Bureau.Those estimates rank Forsyth County as the 33rd-fastest-growing county, having grown an estimated 3.6 percent between 2010 and 2011.Similar estimates released in 2009, showing population changes from 2007 to 2008, put Forsyth at fifth.Last year, one of Georgia’s least populous counties — Charlton County — was considered to be the country’s fastest growing, adding an estimated 1,251 people — a 10.3 percent change — between 2010 and 2011.In contrast, census officials estimate that Forsyth added about five times the people, which amounted to only a 3.6 percent increase in the massive metro Atlanta county’s population.The estimates released Wednesday are the first glimpse at the population since the decennial census in April 2010. Census officials say they show new patterns in population growth nationwide, but continue to show that metro areas in the southern and western regions of the United States are among the fastest growing.In Northeast Georgia, the numbers show, for the most part, continued growth. But the growth so far this decade comes at a much slower pace than the previous one.Two counties showing losses in population in Northeast Georgia are Banks, which lost less than 1 percent of the population recorded in 2010, and Union, which lost an estimated 1.03 percent of its 2010 population.Hall County, on the other hand, grew about 1.8 percent, according to the estimates.Hall has long been the population center of Northeast Georgia, but the 2011 estimates show Forsyth County’s growth could make it more populous than Hall by the end of this year.