Oregon is under a state of emergency due to the blizzard. In one of the incidents in Portland on Wednesday, three people were killed in a car hit by a high-voltage cable that had fallen in the wind, while the baby in the car survived.
The weather is not expected to change until midweek.
The death toll from the harsh conditions was compiled by the BBC's US partner CBS television.
In Seattle, five people, most of them thought to be homeless, also died from the cold, AP reported.
In the state of Mississippi, high school and university vacations were extended.
In New York, the American football team Buffalo Bills enlisted the help of fans to clear snow from the stadium ahead of yesterday's game.
The weather in the US is expected to warm up and rain is expected to start by mid-week. Authorities are therefore warning of flooding in the central-western and northeastern parts of the country.
