Rattata locations — where to catch

In Sinnoh (Diamond, Pearl & Platinum)

• Route 225 — Walk
• Sea Route 226 — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Bell Tower — Walk
• Burned Tower — Walk
• Johto Safari Zone — Walk
• Mt. Mortar — Walk
• Route 1 — Walk
• Route 11 — Walk
• Route 22 — Walk
• Route 29 — Walk
• Route 3 — Walk
• Route 30 — Walk
• Route 31 — Walk
• Route 32 — Walk
• Route 33 — Walk
• Route 34 — Walk
• Route 38 — Walk
• Route 39 — Walk
• Route 4 — Walk
• Route 46 — Walk
• Route 7 — Walk
• Route 9 — Walk
• Sprout Tower — Walk
• Tohjo Falls — Walk
• Union Cave — Walk

In Kanto (FireRed & LeafGreen)

• Pokémon Mansion — Walk
• Route 1 — Walk
• Route 16 — Walk
• Route 17 — Walk
• Route 18 — Walk
• Route 2 — Walk
• Route 22 — Walk
• Route 4 — Walk
• Route 9 — Walk

In Johto & Kanto (Gold, Silver & Crystal)

• Burned Tower — Walk
• Mt. Mortar — Walk
• Route 1 — Walk
• Route 11 — Walk
• Route 22 — Walk
• Route 29 — Walk
• Route 3 — Walk
• Route 30 — Walk
• Route 31 — Walk
• Route 32 — Walk
• Route 33 — Walk
• Route 34 — Walk
• Route 38 — Walk
• Route 39 — Walk
• Route 4 — Walk
• Route 42 — Walk
• Route 46 — Walk
• Route 6 — Walk
• Route 7 — Walk
• Route 8 — Walk
• Route 9 — Walk
• Sea Route 21 — Walk
• Sprout Tower — Walk
• Tin Tower — Walk
• Tohjo Falls — Walk
• Union Cave — Walk

In Kanto (Red, Blue & Yellow)

• Pokémon Mansion — Walk
• Route 1 — Walk
• Route 10 — Walk
• Route 11 — Walk
• Route 16 — Walk
• Route 18 — Walk
• Route 2 — Walk
• Route 22 — Walk
• Route 3 — Walk
• Route 4 — Walk
• Route 5 — Walk
• Route 6 — Walk
• Route 7 — Walk
• Route 8 — Walk
• Route 9 — Walk
• Sea Route 21 — Walk

Other games (6)

• Brilliant Diamond / Shining Pearl (Gen 8): Kanto, Route 225, Sea Route 226
• Let's Go, Pikachu! / Let's Go, Eevee! (Gen 7): Cerulean City, Kanto Route 1, Kanto Route 10, Kanto Route 11, Kanto Route 16, Kanto Route 17, Kanto Route 18, Kanto Route 2, Kanto Route 22, Kanto Route 3, Kanto Route 4, Kanto Route 5, Kanto Route 6, Kanto Route 7, Kanto Route 8, Kanto Route 9, Kanto Sea Route 21, Pokemon Mansion
• Ultra Sun / Ultra Moon (Gen 7): Alola Route 1, Route 2, Route 4, Route 6, Route 8, Kala’e Bay, Verdant Cavern
• Sun / Moon (Gen 7): Route 1, Route 2, Route 3, Route 4, Route 6, Route 8, Hau'oli City, Kala’e Bay, Kanto, Verdant Cavern
• Omega Ruby / Alpha Sapphire (Gen 6): Route 117
• Black 2 / White 2 (Gen 5): Castelia City, Castelia Sewers, Relic Passage

Rattata — full Pokédex entry