Montrose is a census-designated place in Henrico County, Virginia, United States. The population was 7,909 at the 2020 census. Montrose is located at 37°31′14″N 77°22′42″W / 37.52056°N 77.37833°W. According to the United States Census Bureau, the CDP has a total area of 3.3 square miles, of which 3.2 square miles is land and 0.077 square miles, or 2.…Montrose is a census-designated place in Henrico County, Virginia, United States. The population was 7,909 at the 2020 census. Montrose is located at 37°31′14″N 77°22′42″W / 37.52056°N 77.37833°W. According to the United States Census Bureau, the CDP has a total area of 3.3 square miles, of which 3.2 square miles is land and 0.077 square miles, or 2.31%, is water.