Michigan is tied with Iowa for third place for the highest census response rates in the country, according to the census website. The national response rate is 61.5% and Michigan has a 67.8% response rate as of June 18. Minnesota is in first place nationally with a 71% response rate and Wisconsin isnt far behind with a 68.5% response rate. Keweenaw, Lake, Mackinac and Oscoda counties have response rates of about 30% or below -- the lowest response rates in the state. Detroits census response rate has a history of being low.