Membership in the Oklahoma City Chapter is comprised of any active member of the Federal Bar Association who resides or has his or her employment or office in the following counties which make up the Western District of Oklahoma:

Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian, Cimarro, Cleveland, Comanche, Cotton, Custer, Dewey, Ellis, Garfield, Garvin, Grady, Grant, Greer, Harmon, Harper, Jackson, Jefferson, Kay, Kingfisher, Kiowa, Lincoln, Logan, McClain, Major, Noble, Oklahoma, Payne, Pottawatomie, Roger Mills, Stephens, Texas, Tillman, Washita, Woods, Woodward