How many stars did the US flag have in 1814?

In 1814, the United States flag had 15 stars. This design was adopted in 1795 and included one star for each state in the Union at that time, with Vermont and Kentucky being the last two states added before the flag's design changed again in 1818. The 15-star flag was commonly known as the "Star-Spangled Banner," which inspired Francis Scott Key during the War of 1812.