The unemployment rate in Atlantic County has risen to 11.4% as the impact of three casino closings in just over a two-week period at the end of the summer is being felt. The Press of Atlantic City reports the September rate for Atlantic County, which includes Atlantic City, increased by 1.3%. The Showboat closed Aug. 31, Revel shut down on Sept. 2 and Trump Plaza closed on Sept. 16. So far, including the Atlantic Club, which closed in January, 8,000 casino workers have lost their jobs this year. In September, 5,400 more people in Atlantic County were counted as unemployed than in August, with 4,900 of them in the leisure and hospitality industry.