Cedar Rapids Gazette: Fifty-one Iowa counties were ranked among the healthiest communities in the country, according to a new nationwide health ranking released this week. Winneshiek, Dallas and Sioux counties were named the healthiest counties in Iowa by the 2018 Healthiest Communities Rankings, a report by the U.S. News and World Report in collaboration with the Aetna Foundation, a charitable arm of the insurance company. Winneshiek, Dallas and Sioux were ranked at 22nd, 47th and 107th nationally. Polk County came in at 445th.