 After Pike County's borders were resized, the land that would later become Troy was settled in the early 1830s.Originally known as Deer Stand Hill (an Indian hunting ground) which was first settled about 1824, it was later known as Zebulon and then Centreville before being renamed Troy in 1838.Troy became the county seat that same year after a new county courthouse was built in the city, replacing the previous county seat town of Monticello.