Marshall County, Oklahoma
| Marshall County, Oklahoma | |
|---|---|
 Location in the U.S. state of Oklahoma |
|
 Oklahoma's location in the U.S. |
|
| Founded | 1907 |
| Seat | Madill |
| Largest city | Madill |
| Area | |
| • Total | 427 sq mi (1,106 km2) |
| • Land | 371 sq mi (961 km2) |
| • Water | 56 sq mi (145 km2), 13% |
| Population (est.) | |
| • (2013) | 15,988 |
| • Density | 43/sq mi (17/km²) |
| Congressional district | 2nd |
| Time zone | Central: UTC-6/-5 |
| Website | marshall |
Marshall County is a county located on the south central border of Oklahoma. As of the 2010 census, the population was 15,840. Its county seat is Madill. The county was created at statehood in 1907 from the former Pickens County of the Chickasaw Nation. It was named to honor the maiden name of the mother of George Henshaw, a member of the 1906 Oklahoma Constitutional Convention. The county and its cities are part of the Texoma region.
The area covered by Marshall County was part of the territory set aside by the U.S. government for resettlement of the Choctaw tribe and the closely related Chickasaw tribe from their lands in the southeastern United States. The Chickasaws began relocating to this area in 1837. The U.S. Army built Fort Washita in 1842 to protect the new arrivals from raids by other tribes. In 1857, the Chickasaw Nation formally separated from the Choctaw Nation. This area became part of Pickens County in the Chickasaw Nation.
Railroads came to the present-day Marshall County in 1901, when the St. Louis, Oklahoma and Southern Railway (acquired shortly after by the St. Louis and San Francisco Railway), known as the Frisco, constructed a north-south line. The following year, the St. Louis, San Francisco and New Orleans Railroad (formerly the Arkansas and Choctaw Railway) laid tracks from east to west through the area. This line was sold to the Frisco in 1907. The State of Oklahoma relocated part of this line in 1941 to make way for the creation of Lake Texoma.
According to the U.S. Census Bureau, the county has a total area of 427 square miles (1,110 km2), of which 371 square miles (960 km2) is land and 56 square miles (150 km2) (13%) is water. It is the smallest county in Oklahoma by land area and the third-smallest by total area. The Red River drains the county and formed the county's southern boundary. Completion of the Denison Dam in 1942 created Lake Texoma which inundated part of Marshall County's land area and forms the current southern boundary and the eastern boundary of the county as well.
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