Houston Astros franchise seasons
64 available seasons. Historical team names follow each season's source article.
- 2025 Houston Astros — 60 roster players
- 2024 Houston Astros — 55 roster players
- 2023 Houston Astros — 41 roster players
- 2022 Houston Astros — 45 roster players
- 2021 Houston Astros — 52 roster players
- 2020 Houston Astros — 43 roster players
- 2019 Houston Astros — 45 roster players
- 2018 Houston Astros — 41 roster players
- 2017 Houston Astros — 46 roster players
- 2016 Houston Astros — 43 roster players
- 2015 Houston Astros — 46 roster players
- 2014 Houston Astros — 48 roster players
- 2013 Houston Astros — 50 roster players
- 2012 Houston Astros — 51 roster players
- 2011 Houston Astros — 47 roster players
- 2010 Houston Astros — 48 roster players
- 2009 Houston Astros — 42 roster players
- 2008 Houston Astros — 41 roster players
- 2007 Houston Astros — 41 roster players
- 2006 Houston Astros — 39 roster players
- 2005 Houston Astros — 36 roster players
- 2004 Houston Astros — 42 roster players
- 2003 Houston Astros — 44 roster players
- 2002 Houston Astros — 41 roster players
- 2001 Houston Astros — 45 roster players
- 2000 Houston Astros — 45 roster players
- 1999 Houston Astros — 38 roster players
- 1998 Houston Astros — 38 roster players
- 1997 Houston Astros — 41 roster players
- 1996 Houston Astros — 43 roster players
- 1995 Houston Astros — 44 roster players
- 1994 Houston Astros — 33 roster players
- 1993 Houston Astros — 36 roster players
- 1992 Houston Astros — 38 roster players
- 1991 Houston Astros — 44 roster players
- 1990 Houston Astros — 44 roster players
- 1989 Houston Astros — 37 roster players
- 1988 Houston Astros — 39 roster players
- 1987 Houston Astros — 43 roster players
- 1986 Houston Astros — 41 roster players
- 1985 Houston Astros — 38 roster players
- 1984 Houston Astros — 36 roster players
- 1983 Houston Astros — 33 roster players
- 1982 Houston Astros — 38 roster players
- 1981 Houston Astros — 37 roster players
- 1980 Houston Astros — 33 roster players
- 1979 Houston Astros — 40 roster players
- 1978 Houston Astros — 39 roster players
- 1977 Houston Astros — 37 roster players
- 1976 Houston Astros — 36 roster players
- 1975 Houston Astros — 35 roster players
- 1974 Houston Astros — 35 roster players
- 1973 Houston Astros — 39 roster players
- 1972 Houston Astros — 32 roster players
- 1971 Houston Astros — 36 roster players
- 1970 Houston Astros — 38 roster players
- 1969 Houston Astros — 37 roster players
- 1968 Houston Astros — 38 roster players
- 1967 Houston Astros — 47 roster players
- 1966 Houston Astros — 45 roster players
- 1965 Houston Astros — 48 roster players
- 1964 Houston Colt .45s — 42 roster players
- 1963 Houston Colt .45s — 45 roster players
- 1962 Houston Colt .45s — 43 roster players