Montgomery County Ag Fair Basic event infoEvent date: 08/20/2026 - 6:00pm to 10:00pmLocation: Montgomery County Fair Grounds Gaithersburg , MD United States See map: Google Maps Maryland US Public event fieldsToday is Military Day at the Montgomery County Ag Fair - We will perform 12:30-1:15 pm on the Pepco Community Stage. And check us out M-F 6-10 pm, S-S 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/
