Grand was the one-time county seat of Ellis County, Oklahoma

Ellis County, Oklahoma

Ellis County is a county located in the U.S. state of Oklahoma. As of 2000, the population was 4,075. Its county seat is Arnett.-Geography:...

. First established as Ioland to be the county seat of "E" County (later Day County

Day County, Oklahoma Territory

Day County was one of the original counties of Oklahoma Territory. Day County was in the western part of the territory, along the Texas border. When it was originally established, it was known as E County...

) when the Cheyenne Arapaho reserve was opened, it was moved across the Canadian River

Canadian River

The Canadian River is the longest tributary of the Arkansas River. It is about long, starting in Colorado and traveling through New Mexico, the Texas Panhandle, and most of Oklahoma....

and renamed Grand.

When Day County was extinguished at statehood, Grand found itself in Ellis County, and was the county seat until August 26, 1908. The post office existed from November 4, 1892, until September 30, 1943. Only the footings of the courthouse and the vault that held the county records remain visible at the site.