Clarksville is an unincorporated community in Howard County; the second wealthiest county in the United States according to the U.S. Census Bureau. The community is named for William Clark, a farmer who owned much of the land on which the community now lies and served as a postal stop that opened on the 4th of July 1851.
Some of the most expensive homes on the East Coast are located in or around the town, whose property values are among the highest in the country. According to the U.S. Census Bureau, Clarksville District 5 has a population of 56,239, with an estimated average income of $195,124, with median income of $160,606.
The village of River Hill (which include Pheasant Ridge and Pointers Run), the newest addition to the Rouse Company development of Columbia, is adjacent to Clarksville.
Clarksville's public schools, part of the Howard County public school system, are among the highest-ranked in the nation and often have significantly higher funding than competing private and charter schools.
The area is located southwest of Baltimore and north of Washington, D.C., and many residents of Clarksville commute to work in one of these two cities or their close-in suburbs.
Montrose and Richland Farm are listed on the National Register of Historic Places in 1973.