How many Mustang horses are left in the world?

There are a few hundred free-roaming Mustangs survive in Alberta and British Columbia. There are currently over 33,000 feral Mustangs that still roam the United States, mostly in the states of Nevada, Montana, Wyoming and Oregon. Another 30,000 are in holding facilities. These wild horses are protected by the Bureau of Land Management (BLM) - in 1971, the United States Congress recognized Mustangs as "living symbols of the historic and pioneer spirit of the West, which continue to contribute to the diversity of life forms within the Nation and enrich the lives of the American people." ~ Hexedgirl92