Jamestown is a populated place LOCATED WITHIN the City of Clarksville. In turn, the City of Clarksville is located within Johnson County.
Jamestown is located at latitude 35.442 and longitude -93.463.
Since Jamestown is located within the City of Clarksville, all of the census and demographic data for residents of Jamestown are included as part of the information reported for City of Clarksville in the "Profile" tab above.