For Cass County, all corn grain yield for 2014 was 170.2 bu/ac, which was second highest yield behind 2009 (176 bu/ac). Otoe County all corn grain yield was 158.8 bu/acre in 2014, which was third most behind 2009 (166 bu/ac) and 2004 (163 bu/ac).
More information on 2014 data can be found here.