The Constitution says, “”The President shall from time to time give to Congress information of the State of the Union and recommend to their Consideration such measures as he shall judge necessary and expedient.” Article II, Sec. 3, U.S. Constitution
Prior to the 20th Century, the State of the Union was referred to as the President’s Annual Message. It was often delivered as a written report to Congress where a clerk would read it. As the President’s Annual Message is in fact an earlier name for the State of the Union, all of these are labeled as State of the Union Addresses at this site.
Here are the State of the Union Addresses of the American Presidents:
William Henry Harrison None
Zachary Taylor 1849
James A. Garfield None
* Note that these speeches are not officially listed as State of the Union Addresses. Regardless, they were perceived as being State of the Union Addresses by the press and the public at the time they were delivered and are commonly remembered as being State of the Union Addresses. They are accordingly treated as such by this site.