Snapchat Growth, 2017-2019 [CHART]

This year, 84.8 million people in the US—or roughly a quarter of the population—will use Snapchat, a 7.1% increase from 2017, according to eMarketer estimates.
By that metric, it will grow faster than Facebook and Twitter—which will see user counts rise just 0.9% this year—but slower than Instagram (up 13.1%). Read the rest at eMarketer.