Caesars Southern Indiana is the largest employer, followed by Tyson Foods and the Harrison County Hospital.

One Interstate highway and one U. S. Route run through the county, as do eight Indiana State Roads and two railroad lines.

Many of the state's early important historic events occurred in the county, including the writing of Indiana's first constitution.

Corydon was the state capital until 1825, but in the years afterward remained an important hub for southern Indiana.

There is evidence of flint mining in local caves as early as 2000 BCE; the stone was used to produce crude tools.

Passing migratory tribes frequented the area which was influenced by succeeding groups of peoples including the Hopewells and Mississippians.

[9] Permanent human settlements in the county began with the arrival of American settlers in the last decade of the 18th century.

[12] The county was named for William Henry Harrison, the first governor of Indiana Territory, a General in War of 1812, hero of Tippecanoe, and the 9th U.S.

James, Isaiah, and Daniel (son of Squire) Boone settled in Harrison County's Heth Township during the first decade of the 1800s.

He was one of the wealthiest settlers and amassed a 700-acre (2.8 km2) tract of land around Corydon, built a large home, and maintained an inn.

[15] Paul and Susannah Mitchem became Quakers and immigrated to Harrison County from North Carolina in 1814, bringing with them 107 slaves whom they freed after arriving.

This road and ferry greatly expanded the county's economic viability and ease of access to the outside world, leading to a rapid settlement of the area.

[17] Dennis Pennington, who lived near Lanesville, became one of the county's early leading citizens and speaker of the territory's legislature.

Hostilities broke out in 1811 with the Native American tribes on the frontier, and the territorial capital was moved to Corydon on May 1, 1813, after Pennington suggested that it would be safer than Vincennes.

The largest barren ran from the northern edge of Corydon northward to Palmyra, and from the Floyd Knobs in the east, westward to the Blue River.

As settlement expanded and farming grew in the early 19th century, settlers found the barrens to be fertile farmland, and they were quickly settled.

As settlement increased, the wildfires were stopped and by the start of the 20th century the uninhabited parts of the barrens had become forested and have remained so until modern times.

[7] Morgan landed on the east side of Mauckport with two thousand cavalry and marched north burning homes, farms, and mills.

[26] After the battle, Morgan continued into northern Harrison County where he looted the New Salisbury area with the main body of troops.

[n 1] The building was designed by Fowler and Karges of Evansville and was constructed by J. Fred Beggs and Company of Scottsburg.

It was developed in 1973 by the Harrison County Park Board by adding public facilities to the western part of the preserve.

[34] Caesars Indiana opened a casino river boat, hotel complex, and golf course in 1998, boosting the county's tourism industry.

[35] Harrison County is located in the far southern part of Indiana, about halfway between the state's east and west borders.

[36] The terrain slopes to the south and west, with its highest point (972 feet/296 meters ASL) on Lagle Ridge, 2 miles (3.2 km) NE of Depauw.

[36] There are only large two bodies of water (other than rivers) within the county's borders, and both are man-made: Lake Coleman is part of Buffalo Trace Park near Palmyra, and the middle fork of Buck Creek has been dammed in Posey Township.

It rises from a solid rock in a level spot of land, and its flow was sufficient to power flour mills in the past.

Harrison County is in the humid subtropical climate region of the United States along with most of Southern Indiana.

[48] The county has other elected offices, including sheriff, coroner, auditor, treasurer, recorder, surveyor and circuit court clerk.

[48] Each township has a trustee who administers rural fire protection and ambulance service, provides poor relief and manages cemetery care, among other duties.

[65] There is one airport in Harrison County, a general-aviation (gravel east–west strip) port one mile (1.6 km) NNW of Elizabeth: Robinson Airpark.