The 49th state to join the United States was Alaska, which was admitted to the Union on January 3, 1959. The crossword solutions for the term '49th State' are Egan (4 letters), Alaska (6 letters), ALASKAN (7 letters), and Iowa (4 letters). Egan is a surname derived from the Irish name Ó Geibheannaigh, meaning 'descendant of Geibheannach'. Alaska is the largest state in the United States by area and is located in the northwest extremity of the North American continent. ALASKAN is an adjective used to describe something or someone from the state of Alaska. Iowa is a state located in the Midwestern United States and was the 29th state to join the Union on December 28, 1846.