Where to catch Geodude

In Kitakami (Scarlet & Violet – The Teal Mask)

• Apple Hills — Walk
• Chilling Waterhead — Walk
• Infernal Pass — Walk
• Kitakami Road — Walk
• Kitakami Wilds — Walk
• Oni Mountain — Walk
• Oni's Maw — Walk
• Paradise Barrens — Walk
• Reveler's Road — Walk
• Wistful Fields — Walk

In Blueberry Academy (Scarlet & Violet – The Indigo Disk)

• Canyon Biome — Walk
• Chargestone Cavern — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Granite Cave — Walk
• Magma Hideout — Walk
• Route 111 — Rock Smash, Walk
• Route 114 — Rock Smash, Walk
• Safari Zone — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• Dark Cave — Walk
• Mt. Moon — Walk
• Mt. Mortar — Walk
• Rock Tunnel — Walk
• Route 33 — Walk
• Route 45 — Walk
• Route 46 — Walk
• Team Rocket Base — Static Encounter, Walk
• Union Cave — Walk

In Kanto (Red, Blue & Yellow)

• Mt. Moon — Walk
• Rock Tunnel — Walk

Geodude — full Pokédex entry