Your link, “Iowa had reported 549 cases of the novel coronavirus, or COVID-19. Sixty-one patients were hospitalized. At least 7,304 people have tested negative for the coronavirus; nine people have died.”
That still doesn’t answer the question of how many cases does Iowa have because that’s merely how many the CDC has giving their gold stamp of approval and recorded. Testing stinks. Tack on a zero and you’re closer to the true number, so 73,040.