McClain County is named for Charles M McClain, who was at the constitutional convention.
Surrounding County Courthouses:
N – Cleveland County
E – Cleveland County, Pottawatomie County and Pontotoc County
S – Garvin County
W – Grady County
Created: July 16, 1907 
County Seat:
Purcell 1907 – present
County Courthouse – Purcell
Location: 121 North 2nd Avenue / West Washington Street
Built: 1927
Style: Classical Revival
Architect: Hawk & Parr
Contractor: Cowen Brothers
Description: The building faces north and is a three story brown colored brick and concrete structure. Each side of the building has ornamentation consisting of a central facade of four pairs of fluted pilasters framing three window bays on the second and third stories. These pilasters support a stone cornice and frieze which extends only to the outermost pilasters. The frieze of the north front facade is inscribed, “MCCLAIN COUNTY.” The entranceways are centered on the ground level on each of the four sides of the building and are slightly recessed and framed with white stone slabs, A series of round, white colored medallions decorate the building above the windows of the ground floor. Windows are multi-pained. A partial attic story constructed of shaped, reinforced concrete slabs houses the jail. The building has a flat roof line. The building houses the County District Court of the 21st Judicial District. An addition was added on the west side in 1994.
See: National Register of Historic Places – McClain County Courthouse
See: The 21st Judicial District includes Cleveland County and Garvin County.
Photos taken 2009