Bon Homme County is a county located in the state of South Dakota. Based on the 2010 census, the population was 7,070. Its county seat is Tyndall.
Bon Homme is named after Bon Homme Island in the Missouri River. Bon homme is French for good man.
County QuickFacts: CensusBureau Quick Facts
A French voyageur, exploring the Missouri River on an early expedition, was probably responsible for the naming of Bon Homme County. This name was first applied to a 2,000-acre island in the river. Bon Homme, a town that sprang up near by and took its name from the island, was the earliest settlement in the county. When the county was organized in 1862 by an act of the first territorial legislature, they named the county for the village, which was made the county seat. In 1885 Tyndall was named the county seat. An attempt to change the name of the county from "Bon Homme" to "Jefferson" in 1885 was not approved by Governor Edmunds.
As reported by the Census Bureau, the county has a total area of 581 square miles (1,506 km2), of which, 563
square miles (1,459 km2) of it is land and 18 square miles (47 km2) of it (3.09%) is water.
Bordering counties are as follows: