It's impossible to put a figure on it, but from ticket sales and research there is an estimate that in the UK alone the club has around 1.5million supporters (8th most in UK) and also has hundreds of thousands if not millions more around the world.
11 MILLION
more than a million the most is in England
Manchester United is one of the most popular clubs in the world and has a large following worldwide. It is too difficult to count how many fans they have.
Probably as many as there are woman fans in the world.
About 1 1/2 million in the UK alone, many more worldwide.
none because they are such and awful team. Manchester united (the best team ever) have the most fans ever. if you approve of my answer, follow me on twitter (@red_devil_2)
1
95,000,000
None
480 million worldwide
1.789 billion
Newcastle's ground holds 52,000 which it regularly sells out. Since a lot of fans cannot regularly attend matches due to price or living too far away (the latter for myself) you could argure there is approx 250,000 Newcastle 'fans' with varying levels of support.