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There are currently around 61 million voice assistant users in the U.S., approximately 18% of the U.S. population, according to research by eMarketer. This includes speaker systems like the range of Amazon Echo devices as well as native voice assistants across mobile platforms such as Apple’s Siri, Microsoft’s Cortana, Samsung’s Bixby and Google's Assistant.

This is expected to grow to over 70 million U.S. users by the end of 2019, spurred by multiple trends.