The population numbers since 2010 look bad for most rural Iowa counties: Pocahontas, down 7.8%; Sac, down 6.1%; Audubon, down 10%; Cass, down 7.3%; Adams, down 9.5%. A small sampling of isolated rural counties. They may have peaked in population in 1940 or before. The sad news is: Nothing is on the horizon to turn it around.This according to Iowa State University research economist Dave Swenson, who studies regional trade dynamics and population. “They’re not within driving distance of a market center,” he explains, as is much of the Great Plains. Too far from Omaha or even Sioux City. All the good job growth in Iowa occurred in Des Moines, Cedar Rapids, Dubuque, Iowa City and Ames. That is where the population is headed, not to Atlantic or Wall Lake. His colleagues in Extension are doing a Shrink Smart program that helps communities transition into maturity. It strikes us as hospice for rural America — give us an IV drip to keep the sewer and water systems in repair, and give us a hospital nearby and a nursing home, and let nature sort of take its course.