 Population and building booms in the late 20th century led to the formation of other areas west and south of Port St. Lucie including St. Lucie West and the new master planned community of Tradition.The early 21st century brought many trials for the county including two major hurricanes in 2004 and an economic and housing slump starting in 2008.In 2005, St. Lucie County celebrated its 100th birthday.