[3] Important paleontological discoveries, dating from the Pliocene epoch, have been made at the Pipe Creek Sinkhole in Grant County.

[citation needed] Grant County was formed in 1831 by settlers from Kentucky and Virginia.

It was named after Captains Samuel and Moses Grant of Kentucky, who were killed fighting indigenous warriors north of the Ohio River.

In 1831, Martin Boots and David Branson each donated 30 acres of land to begin a settlement called Marion.

This land was on the north side of a fast-flowing and scenic river which the Miami Indians called Mississinewa.

On August 7, 1930, a mob of an estimated 5,000 people took three African-American men, Thomas Shipp and Abram Smith, both 19, and James Cameron, 16, from the county jail.

Grant County consists of low rolling hills, covered with vegetation and devoted to agriculture or urban development.

Representatives, elected to four-year terms from county districts, are responsible for setting salaries, the annual budget, and special spending.

The commissioners are charged with executing the acts legislated by the council, collecting revenue, and managing the day-to-day functions of the county government.

The judge on the court is elected to a term of four years and must be a member of the Indiana Bar Association.