frederick county va population
Frederick County. Frederick county is located in north Virginia. Frederick county has 413.50 square miles of land area and 2.01 square miles of water area. As of 2010-2014, the total Frederick county population is 80,377, which has grown 35.75% since 2000. The population growth rate is much higher than the state average rate of 15.63% and is much higher than the national average rate of 11.61%.