[3] It is located about 30 driving miles southeast of the county seat of Frederick, and is situated at the intersection of US Route 70 and Oklahoma State Highway 36.

[4] The Big Pasture, approximately 480,000 acres (1,900 km2) bounded on the south by the Red River and presently located in parts of Comanche, Cotton, and Tillman counties, was the last settled territory in Oklahoma.

Native control of the land traces to the Quapaw, who ceded it to the United States in 1818.

The Choctaw and Chickasaw accepted the area in the 1820s and 1830s but lost it as a result of the Reconstruction Treaty of 1866.

By the terms of the Medicine Lodge Treaty of 1867 a reservation that included the Big Pasture was set-aside for the Kiowa, Comanche, and Apache.

Prior to the opening of the area, the United States platted five official townships: Randlett, Ahpeatone, Isadore, Quanah and Eschiti.

By 1907, Eschiti had an official United States Post Office and Kell City had the railroad.

Citizens from both towns were in heated competition for new settlers and businesses moving to the area.

To try to settle the differences, Reverend Andrew J. Tant, a Baptist minister and homesteader, went into partnership with Frank Kell and offered free lots to businesses if they would relocate to the Tant farm, which would eventually become Grandfield.

Since the Tant farm was only about a mile from Kell City, people willingly moved.

According to Mrs. Lawrence Hooks, an early settler, she once cooked breakfast in Eschiti and dinner in Grandfield, without leaving her house.

Assistant Postmaster General Charles P. Grandfield was helpful in granting the request.

[5] The town's founders and early residents came from a variety of locations, backgrounds, cultures and religions; the States of Kentucky, Tennessee, Kansas, Missouri, Arkansas and Texas were well represented, and a substantial number of newly arrived European immigrants also made their homes in Grandfield.

[citation needed] According to the United States Census Bureau, the city has a total area of 0.8 square miles (2.1 km2), all land.

Big Pasture: a place and time in Oklahoma history: a mini book of many facts.

Grandfield The Hub of the Big Pasture Volume I. Marceline, MO: Walsworth Publishers, 1974