Complex sentence: It includes all the Iowa counties north of Polk, Jasper, Poweshiek, Iowa, Johnson, Cedar, and Clinton counties, and east of Kossuth, Humboldt, Webster and Boone counties.
Split into simpler sentences: It includes all the Iowa counties north of Polk, Jasper, Poweshiek, Iowa, Johnson, Cedar, and Clinton counties. It also includes the counties east of Kossuth, Humboldt, Webster and Boone counties.