Where to catch Magnemite

In Paldea (Scarlet & Violet)

• East Province (Area Three) — Walk
• East Province (Area Two) — Walk

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

• Canyon Biome — Walk
• Chargestone Cavern — Walk
• Polar Biome — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• New Mauville — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• Route 11 — Walk
• Route 38 — Walk
• Route 39 — Walk
• Route 6 — Walk

In Kanto (Red, Blue & Yellow)

• Kanto Power Plant — Walk
• Route 10 — Walk

Magnemite — full Pokédex entry