Flag of the United States

Design and components

The current flag has two principal parts: the horizontal stripes and the canton (the top-left rectangle). Its principal elements are:

• Stripes: 13 alternating red and white horizontal stripes, representing the original thirteen British colonies that became the first states.
• Canton: a blue rectangular field in the upper hoist-side corner that contains the star pattern.
• Stars: 50 white, five-pointed stars arranged in rows within the canton; each star symbolises one of the nation's states and collectively represents the federal union (the fifty states).
• Colours: the flag uses red, white, and blue as its three colours.

History and evolution

The basic stripe-and-star concept dates to the late 18th century. A resolution of the Continental Congress in 1777 established a flag with thirteen stripes and directed that a number of stars be displayed "representing a new constellation." As the United States admitted additional states, stars were added to the canton to reflect each new state. By custom and law, when a state is admitted a new star is added and the updated design becomes official on the following Independence Day, 4 July.

Notable 20th-century changes occurred after Alaska and Hawaii became states in 1959. Alaska was admitted on January 3, 1959 (Alaska), and Hawaii on August 21, 1959 (Hawaii). The sequence of official changes and first public displays around those admissions is documented in contemporary records (1959 events); the current 50-star pattern was first flown officially on 4 July 1960 (1960).

Symbolism and colours

While early legislation specified the arrangement of stars and stripes, it did not attach fixed symbolic meanings to the colours. Later commentary and related emblems—such as the Great Seal of the United States—have associated meanings with the colours: white for purity and innocence, red for valor and hardiness, and blue for vigilance, perseverance, and justice. These interpretive associations are often cited in educational and ceremonial contexts, though the Flag Resolution itself focuses on form rather than colour symbolism (red, white, blue).

Use, protocol, and notable facts

The flag is used in government, military, civic, and private contexts. Protocols govern display (for example, how it is raised and lowered, when it is flown at half-staff, and how it should be folded and retired). The national anthem makes explicit reference to the flag as it appears during the bombardment at Fort McHenry, which inspired the nickname "Star-Spangled Banner." The fifty-star design, introduced after Hawaii's admission, is the longest-running official version of the flag in U.S. history.

Other notable aspects include the flag's presence in art and popular culture, its role in ceremonies and memorials, and the varied traditions that communities observe to show respect. Museums and historical organisations preserve earlier patterns and flags with different star arrangements for study and public education. For further reading about the flag’s legal status, historical variants, and care guidelines, consult recognised sources and archival collections referenced by institutions concerned with American history.