Over time, as Congress added to the National Park System, the variety and diversity of geologic features in parks has come to represent America's geologic heritage. Significant geologic features include fossil resources, cave & karst resources, and much more. Learn more...
Duval County, Florida. Duval County is a county located in the State of Florida. As of the 2010 census, the population was 864,263, with a 2015 estimate at 913,010. Its county seat is Jacksonville, with which the Duval County government has been consolidated since 1968. Duval County was established in 1822, and is named for William Pope Duval, Governor of Florida Territory from 1822 to 1834. Duval County is included in the Jacksonville, FL Metropolitan Statistical Area.
Tallahassee is the largest city of Florida with population of 842,583 at the density of 697 inhabitants per km2 on the area of 259 km2, Jacksonville is the largest city located in Duval County where 842,583 inhabitants lives, and the city covered an area of 1,935 km2 with density of 424 inhabitants per km2.