You can find a Geodude in just about any cave or certain patches of grass. Also breaking rocks using rock smash has a chance of encountering a Geodude.
You can't
25.
graveler
No, Geodude is not known to be found in the water areas in Pokemon Diamond, Pearl, and Platinum, unless it was cheated with a cheating device.
it evolves in level 25 and then by trade.
Geodude, Cranidos.
look near rocks or evolve geodude
Geodude evolves at 25 in Pokemon diamond/pearl/platinum. but I'm not sure about any of the other games because i have not checked the other games.
The Pokémon you can get in Iron Island in Pokémon Diamond are Geodude, Graveler, Zubat, Golbat, Onix and Steelix.
As many as you can find I had a Sneasel Magikarp Geodude Shaymin and Seaking
all the Pokemon on route 210 in Pokemon diamond and pearl are ponyta, geodude and if your really lucky you can find onix.
Find a Pokemon that can learn Rock Smash. Like Geodude.