Montgomery County Ag Fair Basic event infoEvent date: 08/21/2026 - 6:00pm to 10:00pmLocation: Montgomery County Fair Grounds Gaithersburg , MD United States See map: Google Maps Maryland US Public event fieldsThe final Friday and Saturday are traditionally the busiest days at the Montgomery County Ag Fair - Look for us today (Fri) 6-10 pm, tomorrow (Sat) 2-7 pm - strolling the upper fairgrounds, singing barbershop harmonies to delight fairgoers of all ages! Check out all the fun at the Montgomery County Agricultural Fair - https://mcagfair.com/
