Calvert Brewing Co. Maryland Production Brewery & Taproom in Upper Marlboro Address: 15850 Commerce CT Upper Marlboro, MD 20774 Hours: Su:12pm-5pm M:Closed Tu:3pm-9pm W:3pm-9pm Th:3pm-9pm F:3pm-9pm Sa:12pm-9pm Website: Calvert Brewing Co. Facebook | Twitter | Instagram