6,207.60 sq mi ( &&&&&&&&&&016078.&&&&&0 16,078 km 2 ) State map highlighting Pueblo County Rio Blanco County 103 Meeker 1889-03-25 Split from Garfield County . Named for the White River , which was originally named el Rio Blanco in Spanish . &&&&&&&&&&&06180.&&&&&0 6,180 &&&&&&&&&&&08355.910000 8,355.91 sq mi ( &&&&&&&&&&021642.&&&&&0 21,642 km 2 ) State map highlighting Rio Blanco