The Osage Nation Congress consists of twelve members that serve as the elected legislative body of the Osage Nation. The Osage Nation Congress shall convene twice annually in regular session.

The first regular Congressional session of each year shall be titled Hun-kah Session and the second regular Congressional session of the year should be titled the Tzi-zho Session. This schedule shall be in honor of the ancient moiety division of Earth and Sky and serves to remind all Osages of the responsibility to bring balance and harmony to the Nation.
 
Per ONCA 06-12, Hun-kah Session will begin the third Monday in March of each year.
Tzi-zho Session will begin the first Tuesday following the Labor Day Holiday in September of each year.
 
Currently there are seven full time staff members that work in the office.
 
The Osage Nation Congress is currently located in the Osage Tribal Administration Building at 813 Grandview, Pawhuska, OK. Our mailing address is:
 
Osage Nation Congress                  Tel: (918) 287-5543
P.O. Box 1449                                Toll-free: 1-866-454-4647
813 Grandview
Pawhuska, OK  74056