Even more women, estimated at 25%, have been attacked by a partner or husband, the Centers for Disease Control said.
The findings form part of the first set of results from a nationwide study surveying sexual violence by intimate partners against men and women.
More than 24 people a minute reported rape, violence, or stalking, it says, with 12 million offences reported.
Experts at the Centers for Disease Control and Prevention (CDC) described the results of the first year of the National Intimate Partner and Sexual Violence Survey as "astounding".
Among the key figures included in the survey's findings were:
- more than one million women were raped in the 12 months prior to the survey, estimates show
- more than six million women and men were a victim of stalking
- more than 12 million women and men reported rape, physical violence or stalking by an intimate partner over the course of a year. Read More