These 15 startups didn't exist 5 years ago - now they're worth billions

Silicon Valley can create immense value in just a short time. Just look at these 15 startups that didn't even exist five years ago, which are now valued at $1 billion or more, according to venture capitalists.

For the purposes of this list, Business Insider asked PitchBook Data to pull a list of US-based companies that were founded in 2012 or later - since we're nearing the end of 2016 - and that are private tech companies with a valuation of north of $1 billion.

We then ranked them from least to most valuable based on their post-money valuations.

Here are the companies that achieved billion-dollar valuations in the last five years: