The main Montgomery County fairs people ask about are in Texas and Maryland , and they happen at different times. Here’s the quick scoop for 2026.

When is the Montgomery County Fair?

There are (at least) two major events commonly meant by “Montgomery County Fair”:

1. Montgomery County Fair & Rodeo – Conroe, Texas

  • 2026 dates: April 9–19, 2026
  • Location: Montgomery County Fairgrounds, Conroe, Texas.

This event is often called the Montgomery County Fair & Rodeo and features rodeo events, live music, livestock shows, and a carnival.

2. Montgomery County Agricultural Fair – Gaithersburg, Maryland

  • 2026 dates listed on an events platform: August 14–22, 2026 (Eastern Time).
  • Location: Montgomery County Fairgrounds, 501 Perry Parkway, Gaithersburg, MD.

The 2025 fair in Gaithersburg runs August 8–16, continuing its traditional early‑ to mid‑August schedule, and the 2026 listing keeps a similar mid‑August window.

If you’re in Texas, you’re probably looking at April 9–19, 2026.
If you’re in Maryland, you’re probably looking at August 14–22, 2026.

Because “Montgomery County Fair” exists in more than one state, it’s always a good idea to double‑check your local fair association’s official site or ticketing page closer to the date for any last‑minute changes.

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