It appears that in the background information composed by George Lucas in 1977, it was stated that females did exist in the Stormtrooper Corps, but there were few stationed on the Death Star. This suggests that within the Star Wars universe, there are both male and female Stormtroopers, although the representation of female Stormtroopers may vary depending on the specific context or location. This aligns with the idea that Stormtroopers are a diverse group, recruited from various backgrounds and genders.