Carrie Underwood has two sons: Isaiah and Jacob.

  • Her older son, Isaiah Michael Fisher , was born on February 27, 2015.
  • As of early 2026, that makes Isaiah 10 years old (he turned 9 in February 2024 and 9th birthday coverage was in 2024).

So, if you’re asking “how old is Carrie Underwood’s son?” in the sense of her oldest child, Isaiah is 10 years old as of 2026.

For context, her younger son, Jacob Bryan Fisher , was born January 21, 2019, which makes him 7 years old in 2026.

Information gathered from public forums or data available on the internet and portrayed here.