What does Osage mean?
Osage \o-sa-ge\ as a boys' name is of Native American Indian origin. Name of a Native American tribe of the Plains, who were displaced from Missouri and Arkansas into smaller land holdings in Oklahoma.
Osage is a rare first name for men but a somewhat popular surname for both adults and children (#134037 out of 150436, Top 89%). (2000 U.S. Census)
Charted below is the baby name popularity of Osage for boys. Osage has not been recorded in the list so far. (Top 1000 Birth Names Records, 2014)