[3] Beadle County comprises the Huron, SD Micropolitan Statistical Area.

Beadle County, named for Brigadier General William Henry Harrison Beadle,[4] was created by the Dakota Territory Legislature in 1879, and was organized in 1880 with the appointment of three county commissioners by Governor Nehemiah G. Ordway.

The James River flows south-southeastward through the eastern central part of Beadle County.

[5] The terrain of Beadle County consists of low rolling hills, sloping toward the river valley.

Its lowest point is on the south boundary line, where James River flows into adjacent Sanborn County, at 1,230 ft (370 m) ASL.

In 2000, George W. Bush won the county, ending a streak of Democratic-majority voting that began in 1992.