Drowzee locations — where to catch

In Paldea (Scarlet & Violet)

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

In Sinnoh (Diamond, Pearl & Platinum)

• Route 215 — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk
• Route 11 — Walk
• Route 34 — Walk
• Route 35 — Walk

In Kanto (FireRed & LeafGreen)

• Route 11 — Walk

In Sevii Islands (FireRed & LeafGreen)

• Berry Forest — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• Route 11 — Walk
• Route 34 — Walk
• Route 35 — Walk
• Route 6 — Walk

In Kanto (Red, Blue & Yellow)

• Route 11 — Walk

Other games (5)

• Brilliant Diamond / Shining Pearl (Gen 8): Route 215
• Let's Go, Pikachu! / Let's Go, Eevee! (Gen 7): Kanto Route 11
• Ultra Sun / Ultra Moon (Gen 7): Alola Route 2
• Sun / Moon (Gen 7): Alola Route 2
• X / Y (Gen 6): Friend Safari

Drowzee — full Pokédex entry