That's up 4 percent from its estimated value a year ago, when the Redskins franchise was valued at $2.85 billion.
Manchester United have surged ahead of Real Madrid and Barcelona in Forbes' annual ranking of the world's most valuable sports teams for the first time in five years. In those three years, the Cowboys are now worth a reported $4.1 billion, almost double that total, and now stand at No. 1, above Real Madrid, Barcelona and Manchester United.
The Cowboys are worth an estimated 4.2 billion.
Yet the Premier League giants are still less valuable than American sporting behemoths the Dallas Cowboys and the New York Yankees according to the magazine.
Since purchasing the team from businessman Wayne Weaver, current owner Shad Khan has more than doubled the value on the franchise and it appears the team will hit the $2 billion mark next season.
National Football League teams are growing at a rapid rate in value in recent years, despite the drama around concussions over the last few seasons.
"Jerry Jones turned a money-losing franchise into the most profitable sports franchise in the world as AT&T Stadium generates the highest sponsorship and premium seating revenue in the sport". United have moved up two places on the list after being named the fifth most valuable team past year.