What is the name of the town in 'Horton Hears a Who!'?

The town in Horton Hears a Who! is called Whoville. It is a tiny community inhabited by the Whos, who live on a microscopic speck that Horton discovers while bathing in the Jungle of Nool.

Horton can hear the Whos even though the other jungle animals cannot. He places the speck on a clover and promises to protect it, expressing the story’s central idea that every person matters, no matter how small. The Whos eventually make enough noise for the skeptical animals to recognize their existence.

Whoville is often confused with other Dr. Seuss settings. Nool is the jungle where Horton lives, while Mulberry Street belongs to And to Think That I Saw It on Mulberry Street. Solla Sollew is the destination in Oh, the Places You’ll Go! Whoville also appears in How the Grinch Stole Christmas!, where it is home to the Whos and sits beneath Mount Crumpit.