The United States Of Unicorns

The United States is home to 105 unicorn companies valued at $1B+.
As of 7/25/2017, CBInsights.com reports that six private US companies are worth over $10B. The two most valuable unicorns in the US are Uber ($68B) and Airbnb ($29.3B). Palantir Technologies and WeWork, both valued at $20B, are tied for third.
Of the top four highest valued, only WeWork (which is based in NYC) is headquartered outside California.