Woodrow Wilson was the first president of the United States in the 1920s, his presidency lasting from 1914 to 1921. Warren G. Harding served as president from 1921 to 1923, dying from a heart attack while in office. Calvin Coolidge was president from 1923 to 1929, followed by Herbert Hoover.
Coolidge chose not to run for re-election in 1928, though many people thought he would have won. President Hoover finished the 1920s decade, taking office in 1929. Hoover was the 31st president of the United States. He ran for re-election in 1932, but lost to his Democratic opponent, Franklin D. Roosevelt.