Question

How many Pokemon are in Pokemon FireRed?

Answer 1

There are 151 Pokemon in the regional dex, and 386 Pokemon in the full national dex.

source, source

Answer 2

As fizzcube said the pokedex contains 151 Pokemon but if you look at the website I have entered in my comment you can see the Pokemon which are avaliable to be catched from other regions as well!!

Hope this helps!!

Comments

Your link does not exist... O_o

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Okay as you can see the website http://serebii.net/red_green/pokemon.shtml the P in pokemon should be small but i have entered it as a large" p."

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LOL, I forgot he was talking about FR for half a sec. Thought he asked about Red, LOL.
I hate links sometimes. They can be so stubborn :(