Shelby County, Ohio (OH) County population in 2014: 48,951 (49% urban, 51% rural); it was 47,910 in 2000. County owner-occupied with a mortgage or a loan houses and condos in 2010: 9,126. County owner-occupied free and clear houses and condos in 2010: 4,231. County owner-occupied houses and condos in 2000: 13,127.