How old is newt from Cory in the house?

In "Cory in the House," Newt Livingston is portrayed as a teenager, specifically around 15 years old. The show, which is a spin-off of "That's So Raven," follows Cory Baxter as he moves to Washington, D.C., where Newt is one of his friends. The character is known for his quirky personality and comedic antics throughout the series.