From Generation 4
This should help you. http://pokemon.wikia.com/wiki/Pokémon_Swarm#Generation_IV
Pokemon Area Game
Doduo Route 201 D/P/Pt Zigzagoon Route 202 D/P/Pt Cubone Route 203 D/P/Pt Nosepass Route 206 D/P Larvitar Route 206 Pt Phanpy Route 207 D/P/Pt Dunsparce Route 208 D/P/Pt Snubbull Route 209 D/P/Pt Absol Route 213 D/P Spoink Route 214 D/P/Pt Drowzee Route 215 D/P/Pt Delibird Route 216 D/P/Pt Swinub Route 217 D/P Voltorb Route 218 D/P/Pt Farfetch'd Route 221 D/P/Pt Skitty Route 222 D/P/Pt Natu Route 224 D/P/Pt Makuhita Route 225 D/P/Pt Krabby Route 226 D/P/Pt Spinda Route 227 D/P/Pt Beldum Route 228 D/P/Pt Pidgey Route 229 D/P Pinsir Route 229 Pt Corsola Route 230 D/P/Pt Surskit Lake Verity D/P Smoochum Lake Acuity D/P Lickitung Lake Valor D/P Magnemite Fuego Ironworks D/P Electrike Valley Windworks D/P/Pt Slakoth Eterna Forest D/P/Pt
