What is a unicorn company? A unicorn company, or unicorn startup, is a private company with a valuation over $1 billion. As of October 2022, there are over 1,200 unicorns around the world. Popular former unicorns include Airbnb, Facebook and Google. Variants include a decacorn, valued at over $10 billion, and a hectocorn, valued at over $100 billion. Download the full list today to see each company's valuation, investors, and more.