Iowa's unemployment rate dropped to 4.6 percent in October from 4.7 percent in September, Iowa Workforce Development announced today. The current rate is also down from the October 2012 rate of 5.1 percent. The statewide estimate of unemployed people decreased to 75,900 in October from 78,700 in September and 82,600 in October 2012. The total number of working Iowans reached a current-year high of 1.58 million in October, which is 3,000 higher than September and 35,700 higher than a year ago.