The incident took place around 6 p.m., Wednesday, April 6, in Hartford at 82 Chadwick Ave., authorities said.
The woman, who has not been identified, was standing on the second-floor rear deck of her home when the railing collapsed and she fell more than eight feet onto the pavement, causing severe head trauma, said Lt. Aaron Boisvert, of the Hartford Police.
She was transported to Hartford Hospital where she later died, he added.
An investigation is underway.
Click here to follow Daily Voice Stamford and receive free news updates.