The 1940 Census is here! The main 1940 Census web page on the Census web site has lots of links and visual information. You can find out that the average price of a car was $1,611, while the price of gas was 18 cents per gallon. By clicking on the Then and Now tab, you would be able to find graphic comparisons between the 1940 and the 2010 Census. To find specific census information about your family, you would need to use the National Archives web site.