According to the "Yoshiwara Saiken" published in 1775, in the late Edo period, the total number of courtesans was 2021 including 50 sancha (including 8 yobidashi), 357 zashiki-mochi (including 5 yobidashi), and 534 heya-mochi (courtesans who had their own private residential room).
江戸時代後期の安永4年（1775）になると、吉原細見には散茶50人（内、呼出し8人）、座敷持357人（内、呼出し5人）、部屋持534人など（総計2021人）となっている。