Mardi Gras 2026 in St. Louis (Soulard) is on Saturday, February 14, 2026 for the big Grand Parade day, and the actual Mardi Gras/Fat Tuesday date is February 17, 2026.

Key dates at a glance

  • Grand Parade Day in Soulard (main St. Louis celebration): Saturday, February 14, 2026.
  • Mardi Gras Day / Fat Tuesday (church-calendar date): Tuesday, February 17, 2026.
  • Season runs roughly from January 6, 2026 (Twelfth Night) through February 17, 2026.

So if you’re asking “when is Mardi Gras 2026 St. Louis?” in the sense of the big Soulard party, you’ll want to be there Saturday, February 14, 2026.

Quick FAQ

Is the big St. Louis event the same day as Fat Tuesday?

  • No.
  • St. Louis’ Soulard Grand Parade and main festivities are on the Saturday before Fat Tuesday (Feb 14, 2026).
  • Fat Tuesday itself is Feb 17, 2026 , which is the formal Mardi Gras date.

Where in St. Louis is it?

  • The celebration centers on the Soulard neighborhood , just south of downtown St. Louis.
  • The Grand Parade typically runs through downtown/Soulard with after‑parties in the area.

Mini “Quick Scoop” style breakdown

  • Main day to circle: Saturday, Feb 14, 2026 (Grand Parade, big street party).
  • Actual Mardi Gras Day: Tuesday, Feb 17, 2026 (Fat Tuesday).
  • Season window: Early January (starting Jan 6) through Feb 17, with multiple events leading up.

If you’re planning travel or a night out and only want the biggest action, aim for Feb 14, 2026 in Soulard and you’ll hit peak Mardi Gras St. Louis vibes.

TL;DR:

  • “Mardi Gras 2026 St. Louis” for the big Soulard bash = Saturday, February 14, 2026.
  • Official Mardi Gras/Fat Tuesday date = Tuesday, February 17, 2026.

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