26 stadiums were used during the 1991 MLB season. Isolated games and short term temporary home fields are not necessarily included.
1973-2021
Royals
(MLB)
1970-2000
Pirates
(MLB)
1968-2021
Athletics
(MLB)
1966-1996
Braves
(MLB)
1966-2021
Angels
(MLB)
1962-2021
Dodgers
(MLB)
1991-2021
White Sox
(MLB)
1977-2004
Expos
(MLB)
1982-2009
Twins
(MLB)
1969-2003
Padres
(MLB)
1977-1999
Mariners
(MLB)
1916-2021
Cubs
(MLB)
1938-1993
Indians
(MLB)
1964-2008
Mets
(MLB)
1970-2000
Brewers
(MLB)
1960-1996
Giants
(MLB)
1972-1993
Rangers
(MLB)
1954-1991
Orioles
(MLB)
1970-2002
Reds
(MLB)
1912-1999
Tigers
(MLB)
1971-2003
Phillies
(MLB)
1923-2008
Yankees
(MLB)
1966-2005
Cardinals
(MLB)
1989-2021
Blue Jays
(MLB)
1912-2021
Red Sox
(MLB)
1965-1999
Astros
(MLB)
I sincerely appreciate the research work, and the information being shared. It is important and interesting history.