Bexar County, Texas, medical examiner's investigator Sara Horne says Davis died Sunday morning. Horne says no cause of death is available and that an autopsy is planned Monday.
Bishop Bill Frey, a longtime friend of Davis, says she suffered a fall Saturday at her San Antonio home and never recovered.
"The Brady Bunch" debuted in 1969 and aired for five years, with Davis as Alice, the mainstay for the blended sitcom family. Davis appeared in various Brady spinoffs and sequels over the years.
In the 1950s, Davis was the sharp-tongued secretary on another stalwart TV sitcom, "The Bob Cummings Show." The role brought her two Emmys.