[3] It was named for Colonel Miles Vernon (1786–1867), a state senator and veteran of the Battle of New Orleans.

[4] This area was part of the large historic territory of the Osage Nation of Native Americans.

Vernon County suffered considerable damage during the American Civil War.

Guerrillas and insurgents had waged raids against Union troops and carried out personal vendettas in the county.

On May 23, 1863, Union Army soldiers burned the county seat of Nevada, along with the courthouse, in retaliation.

11 (1863), which ordered the people evacuated to end support for Confederate guerrillas operating in the area.

/ Northeast Vernon County R-I School District – Walker The Republican Party predominantly controls politics at the local level in Vernon County despite the Democratic Party's historical control.

Senator Hillary Clinton (D-New York) received more votes, a total of 1,434, than any candidate from either party in Vernon County during the 2008 presidential primary.