From: Historical Atlas of the United States. 1810...Population Density of the area comprising what is now Dallas Co. AL...between 2 and 5 inhabitants per square mile. 1820...Population Density of the same area..6 to 17 inhabitants per square mile. 1830...same as 1820 1840...6-44 inhabitants per square mile 1850...same as 1840 Please note: The maps this information is taken from show only the state, with no county outline, so it is difficult to get any better estimates. This atlas was printed in 1944. Arlene