Climbing the stairs to the observation deck inside the monument on the summit of Mount Greylock, the state's highest point. Page 1 - Page 2 - Page 3 - Page 4 - Page 5 Flag Seal Website : www.mass.gov Capital : Boston Highest point : Mount Greylock, 3,487 feet Area : 10,555 square miles, 44th largest state. Population : 6,349,097 (2000 census) Motto : Ense petit placidam sub libertate (By the sword we seek peace, but peace only under liberty) Admitted to Union : February 6, 1788 State Song : "All Hail to Massachusetts" State Bird : Black-capped Chickadee State Flower : Mayflower State Tree : American Elm