Flags of the U.S. states

The flags of the U.S. states, territories and federal district exhibit a variety of regional influences and local histories, as well as different styles and design principles. Nonetheless, the majority of the states' flags share the same design pattern consisting of the state seal superimposed on a monochrome background, commonly blue.

The most recent current state flag is that of Utah (February 16, 2011), while the most recent current territorial flag is that of the Northern Mariana Islands (July 1, 1985).

Modern U.S. state flags date from the 1890s, when states wanted to have distinctive symbols at the 1893 World's Columbian Exposition in Chicago, Illinois. Most U.S. state flags were designed and adopted between 1893 and World War I.

According to a 2001 survey by the North American Vexillological Association, New Mexico has the best-designed flag of any U.S. state, U.S. territory, or Canadian province, while Georgia's state flag was rated the worst design. (Georgia adopted a new flag in 2003; Nebraska's state flag, whose design was rated second worst, remains in use to date.)

Dates in parentheses denote when the current flag was adopted by the state's legislature.

These are the current flags of the federal district and territories of the United States. Dates in parenthesis denote when the district or territory's current flag was adopted by its respective political body.

The U.S. national flag is the official flag for all islands, atolls, and reefs composing the United States Minor Outlying Islands. However, unofficial flags are in use on five of these nine insular areas:

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