What is the most popular children's telivision show in the US?

SpongeBob SquarePants. Every episode per day on Nickelodeon reaches over 2 billion viewers around the globe! Estabilished in 1999, Spongebob is still a classic. Every year, more than 6.5 trillion copies of spongebob episodes are eitheir bought or recorded in every country. So SpongeBob is definitley your most popular tv show in the u.s. and in the WORLD!