We can estimate, referring to Facebook's user spread as a proxy, that IG likely has around 175 million users in the U.S., with the remaining majority of its audience being in the Asia Pacific (around 750 million users), with India now being Instagram's top market.
Those are estimated, of course, but the data points provide some context as to what IG is seeing around the world, and where the app is most popular. So, if you were trying to work out just how big IG is, and how significant it's become, this is the data that we know.
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