When was the last time 2 teams from the same state met in the World Series?

Yes ... below are the years it has happened (I am considering Brooklyn to be part of New York): 1906 - Chicago White Sox defeated the Chicago Cubs 4 games to 2.

1921 - New York Giants defeated the New York Yankees 5 games to 3.

1922 - New York Giants defeated the New York Yankees 4 games to 0.

1923 - New York Yankees defeated the New York Giants 4 games to 2.

1936 - New York Yankees defeated the New York Giants 4 games to 2.

1937 - New York Yankees defeated the New York Giants 4 games to 1.

1941 - New York Yankees defeated the Brooklyn Dodgers 4 games to 1.

1944 - St. Louis Cardinals defeated the St. Louis Browns 4 games to 2.

1947 - New York Yankees defeated the Brooklyn Dodgers 4 games to 3.

1949 - New York Yankees defeated the Brooklyn Dodgers 4 games to 1.

1951 - New York Yankees defeated the New York Giants 4 games to 2.

1952 - New York Yankees defeated the Brooklyn Dodgers 4 games to 3.

1953 - New York Yankees defeated the Brooklyn Dodgers 4 games to 2.

1955 - Brooklyn Dodgers defeated the New York Yankees 4 games to 3.

1956 - New York Yankees defeated the Brooklyn Dodgers 4 games to 3.

2000 - New York Yankees defeated the New York Mets 4 games to 1.