Looking northeast along High Street toward the water tower in the Boone County community of Jamestown, Indiana. – Huw Williams ( Huwmanbeing ), Public domain – Wikimedia Commons Jamestown is located in Indiana. About 942 people live here (as of 2020). Between 2010 and 2020, the population declined from 958 to 942. The region is at 290 meters above sea level. The area covers about 2.3 square kilometers. There are about 57 streets in Jamestown. The region was founded in 1830. The postal codes are 46147. The dialing code is 765. Jamestown is town in Boone and Hendricks counties, Indiana, United States. Among other things, Jamestown has schools. More information at jamestownin.com/default.aspx.