Otero County 089 La Junta 1889-03-25 Split from Bent County . Named in honor of Miguel A. Otero of the prominent Otero family of the Southwest . &&&&&&&&&&019452.&&&&&0 19,452 &&&&&&&&&&&03283.230000 3,283.23 sq mi ( &&&&&&&&&&&08504.&&&&&0 8,504 km 2 ) State map highlighting Otero County Ouray County 091 Ouray 1877-01-18 Split from Hinsdale and Lake