Johnson Atoll Flag and Description DESCRIPTION The island is an American territory, and therefore uses the flag of the United States. all Country Flags here! Other helpful pages on WorldAtlas The 150 Largest Cities in the World Population of USA States Currencies of the World Trending on WorldAtlas What Are The Five Regions of Asia? US States By Electoral Votes Blue and White Country Flags The Most Dangerous Cities In The World The New 7 Wonders Of The World Countries That Start With The Letter S Which US State Raises The Most Turkeys? The Largest Countries in the World The Top Coffee-Consuming Countries This page was last updated on August 31, 2020.