Based on research done in 2007, but updated in 2015, Coca Cola, Diet Coca Cola, Pepsi, Mountain Dew and Dr. Pepper are the most popular soft drinks in the United States. Diet soda has become popular among American citizens over time.
Sprite, Diet Pepsi, Fanta, Diet Mountain Dew and Coke Zero also made it onto the list of top ten sodas appreciated by Americans. Soda sales have declined, with the exception of diet soft drinks, due the spreading of knowledge of the amount of sugar in sodas.
It's notable that the statistics have not varied much since 2011, aside from a diet soda taking the number two spot.