How old was Aishah (r.a.) when she married to Nabi Muhammad SAW?
This website explains the story about Aishah's age at marriage. It is evidence-based that Aishah (r.a.) was between 19-21 years old when she married. She was not 6-9 years old as commonly believed.
It is good to know that even the marrying age was at 10 years in the US in the 1800s.
In Malaya and elsewhere in this region, the Malay girls married at age 12 once they achieved menarche.
After the Malayan independence, marrying age was 18 and above. However, some parents still request an earlier age for marriage of their daughters.