Mattie Westbrouck is 25 years old as of early 2026.

Quick Scoop: Mattie’s Age

  • Date of birth: 2 September 2000.
  • Reported age on major bio sites: 24–25 years old depending on the last update date.
  • Using that birthdate and the current year 2026, Mattie is 25 years old (turning 26 in September 2026).

Some biography and fan-calculator sites still list 24 because they were last updated in 2025, but they all agree on the same 2 September 2000 birthday.

Tiny timeline

  1. 2000 – Born on 2 September in the United States.
  1. 2018–2020 – Starts gaining traction on TikTok and other platforms.
  1. 2023–2025 – Most “how old is Mattie Westbrouck” pages list them as 22–24, all anchored to that same 2000 birth year.

TL;DR: If you’re searching “how old is Mattie Westbrouck” right now, the best-supported answer is 25 years old, born 2 September 2000.

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