Chikorita locations — where to catch

In Lumiose City (Legends: Z-A)

• Vert Sector 8 — Gift
• Wild Zone 20 — Walk

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

• Coastal Biome — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• New Bark Town — Gift

In Hoenn (Ruby, Sapphire & Emerald)

• Littleroot Town — Gift

Other games (3)

• Sun / Moon (Gen 7): Alola Route 2
• Omega Ruby / Alpha Sapphire (Gen 6): Hoenn Route 101
• XD (Gen 3): Mt Battle

Chikorita — full Pokédex entry