Iowa’s unemployment rate rose slightly in October to 2.6% but remains among the lowest in the nation. Iowa Workforce Development reported Tuesday that the rate climbed from 2.5% in September. The unemployment rate also was higher than a year ago, when the October 2018 figure was 2.4%. Iowa’s unemployment rate is tied for the fourth lowest in the nation, behind Vermont, North Dakota and Utah. The U.S. unemployment rate for October was 3.6%.