Shinx locations — where to catch

In Paldea (Scarlet & Violet)

• East Province (Area One) — Walk
• South Province (Area Five) — Walk, Static Encounter
• South Province (Area Three) — Walk

In Kitakami (Scarlet & Violet – The Teal Mask)

• Kitakami Wilds — Walk
• Paradise Barrens — Walk
• Timeless Woods — Walk

In Hisui (Legends: Arceus)

• Aspiration Hill — Walk
• Deertrack Heights — Walk
• Floaro Gardens — Walk
• Oreburrow Tunnel — Walk
• Sacred Plaza — Walk
• Sonorous Path — Walk

In Sinnoh (Diamond, Pearl & Platinum)

• Fuego Ironworks — Walk
• Route 202 — Walk
• Route 203 — Walk
• Route 204 — Walk
• Valley Windworks — Walk

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk
• National Park — Walk
• Route 1 — Walk
• Route 11 — Walk
• Route 14 — Walk
• Route 15 — Walk
• Route 16 — Walk
• Route 17 — Walk
• Route 18 — Walk
• Route 2 — Walk
• Route 29 — Walk
• Route 3 — Walk
• Route 33 — Walk
• Route 36 — Walk
• Route 37 — Walk
• Route 38 — Walk
• Route 39 — Walk
• Route 46 — Walk
• Route 48 — Walk
• Route 5 — Walk
• Route 7 — Walk
• Route 8 — Walk

Other games (3)

• Brilliant Diamond / Shining Pearl (Gen 8): Fuego Ironworks, Route 202, Route 203, Route 204
• Sword / Shield — The Isle of Armor (Gen 8): Challenge Beach, Challenge Road, Potbottom Desert, Training Lowlands
• Black / White (Gen 5): White Forest

Shinx — full Pokédex entry