As of today, because of all of the Power Rangers' seasons - there has been a total of 18 seasons of Power Rangers, nineteen including the reversion Mighty Morph in Power Rangers, and a total (so far of 8-11-11) there are 743 episodes!
If you mean in the sense of how many people have been Rangers then here's the answer.
There have been 77 Rangers. Of course there is debate when it comes to ones such as the Magna Defender, the Solaris Knight and the Wolf Warrior though so I didn't count them in the total.
There are currently 22 seasons of the show and their names are as follows:
There's been 3 seasons of Mighty Morphin Power Rangers. The last ten episodes of season 3 are called Mighty Morphin Alien Rangers.
Then it goes to the following seasons:
Power Rangers Zeo
Power Rangers Turbo
Power Rangers In Space
Power Rangers Lost Galaxy
Power Rangers Lightspeed Rescue
Power Rangers Time Force
Power Rangers Wild Force
Power Rangers Ninja Storm
Power Rangers Dino Thunder
Power Rangers S.P.D.
Power Rangers Mystic Force
Power Rangers Operation Overdrive
Power Rangers Jungle Fury
Power Rangers RPM
Power Rangers Samurai
Power Rangers Super Samurai
Power Rangers Megaforce
Power Rangers Super Megaforce
Power Rangers Dino Charge
Some sources call a reversioning of of the first 32 episodes of MMPR season 18, and Samurai season 19, but the reversioning never aired outside the USA, and was really just reruns, so it doesn't actually count as a separate season.
There are at least 19 Power Rangers games along with there being at least 2 Mighty Morphin Power Rangers games, 2 Samurai games and 1 Super Samurai game and there's at least a minimum of 5 games for the iOS.
There are 23 seasons of Power Rangers which are the 3 seasons of Mighty Morphin Power Rangers with the third season ending with the Mighty Morphin Alien Rangers mini series and then the following seasons are Power Rangers Zeo, Power Rangers Turbo, Power Rangers In Space, Power Rangers Lost Galaxy, Power Rangers Lightspeed Rescue, Power Rangers Time Force, Power Rangers Wild Force, Power Rangers Ninja Storm, Power Rangers Dino Thunder, Power Rangers S.P.D, Power Rangers Mystic Force, Power Rangers Operation Overdrive, Power Rangers Jungle Fury, Power Rangers RPM, Power Rangers Samurai and Super Samurai, Power Rangers Megaforce and Super Megaforce and Power Rangers Dino Charge.
There are only 2 Power Rangers movies: "Mighty Morphin Power Rangers The Movie" and "Turbo A Power Rangers Movie."
Power Rangers Wild Force only has one season.
Power Rangers Zeo only has one season.
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171 Mighty Morphin Power Rangers2 Mighty Morphin Alien Rangers3 Power Rangers Zeo4 Power Rangers Turbo5 Power Rangers in Space6 Power Rangers Lost Galaxy7 Power Rangers Lightspeed Rescue8 Power Rangers Time Force9 Power Rangers Wild Force10 Power Rangers Ninja Storm11 Power Rangers Dino Thunder12 Power Rangers S.P.D.13 Power Rangers Mystic Force14 Power Rangers Operation Overdrive15 Power Rangers Jungle Fury16 Power Rangers RPM17 Power Rangers Samurai
There have been 16 series made but 18 seasons of the show due to 3 seasons of Mighty Morphin Power Rangers. Following seasons are Zeo, Turbo, Space, Lost Galaxy, Lightspeed Rescue, Time Force, Wild Force, Ninja Storm, Dino Thunder, SPD, Mystic Force, Operation Overdrive, Jungle Fury, RPM and Samurai
Power Rangers Turbo has one season.
There were 6 Power Rangers in Power Rangers Samurai however Power Rangers Samurai only lasted 1 season so there was only 1 season of Power Rangers Samurai before it changed into Power Rangers Super Samurai.
There were no Power Rangers Time Force movies.
Power Rangers Space Patrol Delta has one season.
171 Mighty Morphin Power Rangers2 Mighty Morphin Alien Rangers3 Power Rangers Zeo4 Power Rangers Turbo5 Power Rangers in Space6 Power Rangers Lost Galaxy7 Power Rangers Lightspeed Rescue8 Power Rangers Time Force9 Power Rangers Wild Force10 Power Rangers Ninja Storm11 Power Rangers Dino Thunder12 Power Rangers S.P.D.13 Power Rangers Mystic Force14 Power Rangers Operation Overdrive15 Power Rangers Jungle Fury16 Power Rangers RPM17 Power Rangers Samurai
we need 5 power rangers
There have been 16 series made but 18 seasons of the show due to 3 seasons of Mighty Morphin Power Rangers. Following seasons are Zeo, Turbo, Space, Lost Galaxy, Lightspeed Rescue, Time Force, Wild Force, Ninja Storm, Dino Thunder, SPD, Mystic Force, Operation Overdrive, Jungle Fury, RPM and Samurai
Power Rangers Turbo has one season.
7 Rangers appeared in "Power Rangers RPM."
There were 6 Power Rangers in Power Rangers Samurai however Power Rangers Samurai only lasted 1 season so there was only 1 season of Power Rangers Samurai before it changed into Power Rangers Super Samurai.
There were no Power Rangers Time Force movies.
There are 5 volumes of Power Rangers SPD on DVD.
There were 38 episodes of Power Rangers Dino Thunder.
The duration of Power Rangers Mystic Force is 1320.0 seconds.
The Morphin Grid and Zordon can be used to connect all the different Power Rangers, but the proper "Power Rangers" storyline ended with the Countdown to Destruction in Power Rangers in Space and semi-extended into Lost Galaxy. The Morphin Grid was seen in physical form in the Dino Thunder "Lost Episode" as well as Operation Overdrive's "Once A Ranger". It has been referenced in many different seasons as well, the most recent being Jungle Fury