3,970,697 Iowans have been tested for the coronavirus to this point. 360,209 have tested positive. 5,374 of those have now died. Here are the approximate active case totals for local counties: Bremer County has 244. Butler County has 128. Floyd County has 194. Chickasaw County has 98. Fayette County has 157. Buchanan County has 192. Black Hawk County has 1,927.