16% of Americans own a smart speaker

"One in six Americans now own a smart speaker, according to new research out this week from NPR and Edison Research – a figure that’s up 128 percent from January, 2017. Amazon’s Echo speakers are still in the lead, the report says, as 11 percent now own an Amazon Alexa device compared with 4 percent who own a Google Home product.
Today, 16 percent of Americans own a smart speaker, or around 39 million people.
The holiday shopping season also seemed to have played a role in the increased adoption of smart devices in the U.S., with 7 percent of Americans reporting they acquired at least one smart speaker between Black Friday and the end of December, and 4 percent saying they acquired their first smart speaker during the holidays."

Source:  Techcrunch, 12th January 2018