The length of the flag should be at least ¼ the height of the pole. For example, a 40’ pole requires a 6’ x 10’ flag or larger. This guideline applies to poles 20’ and larger. Most residential flags are 3’ x 5’, or 4’ x 6’. Most small industrial and commercial buildings use either a 5’ x 8’ or 6’ x 10’ flag. Major industrial, municipal and government buildings require 8’ x 12’ and larger. However, the size of the pole is the determining factor.

Flagpole      Flag

20’              3’ x 5’, 4’ x 6’

25’              4’ x 6’, 5’ x 8’

30’ – 35’     5’ x 8’, 6’ x 10’

40’ – 45’     6’ x 10’, 8’ x 12’

50’              8’ x 12’, 10’ x 15’

60’ – 65’     10’ x 15’, 10’ x 19’

70’ – 80’     10’ x 19’, 12’ x 18’

90’ – 100’   20’ x 38’, 30’ x 50’

Flag length should be at least ¼ the height of the pole.