The first two decades of the 21st Century have been amazing for major league baseball when it comes to historical happenings for franchises and cities in reaching and winning the World Series:
2002-Anaheim Angels play in and win first World Series for franchise started in 1961 (51 years).
2004-Boston Red Sox win first World Series since 1918 (86 years)
2005-Chicago White Sox win first World Series since 1917 (88 years); also first for two-franchise city of Chicago since 1917. Houston Astros play in first World Series for franchise started in 1962.
2008-Philadelphia Phillies win second World Series in history. Franchise started in 1883, World Series started in 1903, Phillies won first World Series in 1980.
2010-San Francisco Giants win first World Series for franchise since 1954 (56 years), and first since moving from New York to San Francisco in 1958. Texas Rangers play in first World Series for franchise that started in Washington in 1961 and moved to Dallas-Fort Worth in 1972.
2016-Chicago Cubs play in first World Series since 1945 and win first World Series since 1908 (108 years).
2017-Astros win first World Series for Houston franchise that started as Colt .45s in 1962 (55 years).