Where to find Koffing in HeartGold & SoulSilver

Walk: Burned Tower (30%), Safari Zone (30%)
Static Encounter: Team Rocket HQ

• Burned Tower (1F, B1F) — Walk
• Johto Safari Zone (Marshland) — Walk
• Team Rocket HQ (B1F) — Static Encounter

Koffing in every game · Pokémon HeartGold & SoulSilver interactive map (Johto & Kanto)