Somewhere along the line, I came into possession of something called the "U.S. Directory of Heiden Families." Somebody did research somewhere to find the number of households associated with the surname Heiden over the years. I have no idea of the validity of the statistics shown below but one point of interest is that they shown 1,317 households in 1997. A separate map in the same publication showing households in the year 2000 includes only 941.