Iowa’s ranking among the nation’s safest places to live could give you a “peace” of mind. A national report ranking serious crimes like murder, rape and robbery finds Dubuque 26th most crime-free in the nation, and Cedar Rapids isn’t far behind at number 34. The state’s capital and largest city, Des Moines, ranks 73rd, keeping it in the top 100 ranked by Morgan Quitno. That publishing firm specializes in this kind of statistics. The Waterloo Cedar Falls metropolitan area comes in at 110 and Sioux City ranks 120th. Police say they find the good rankings gratifying, though they worry that surveys taken after September eleventh may show crime numbers jump, the result of having fewer officers on the street.