>HP

>Pokemon Village

+Foongus (1 each)

+Noctowl (2 each)

-Lombre (2 sp. def)

-Poliwag (1 speed)

>Route 5

+Gulpin (1 each)

-Minun/ Plusle (1 speed)

-Scraggy (1 atk)

>Attack

>Route 14

+Ekans (1 each)

+Bellsprout (1 each)

-Skorupi (1 def)

>Route 19

+Arbok (2 each)

+Weepinbell (2 each)

-Gliscor (1 def)

-Skorupi (1 def)

>Def

>Route 18

+Durant (2 each)

+Geodude (1 each)

-Heatmor (2 sp. atk)

>Route 14

+Skorupi (1 each)

-Ekans (1 atk)

-Bellsprout (1 atk)

>It's sad that most things that give defence EVs have Sturdy.

>Sp. Atk

>Route 7

+Psyduck (1 each)

+Roselia (2 each)

-Hoppip (1 sp. def)

>Frost Cavern 1st floor

+Smoochum (1 each)

+Vanillite (1 each)

-Cubchoo (1 atk)

>Route 18

+Heatmor (2 each)

-Geodude (1 def)

-Durant (2 def)

>Sp. Def

>Pokemon Village

+Lombre (2 each)

-Foongus (1 HP)

-Noctowl (2 HP)

-Poliwag (1 speed)

>Route 21

+Swablu (1 each)

-Spinda (1 sp. atk)

-Scyther (1 atk)

>Sp. Def is really lacking in any particularly good spots.

>Speed

>Route 11

+Starly (1 each)

+Stunky (1 each)

-Nidoran (M) (1 atk)

-Nidoran (F) (1 HP)

>Route 5

+Plusle/ Minun (1 each)

-Gulpin (1 HP)

-Scraggy (1 atk)

Route 8

+Taillow (1 each)

+Wingull (1 each)

-Zangoose (2 atk)

-Seviper (1 atk, 1 sp. atk)

All credit to fondant, directly ripped from here.

The extra info if you ever decide to look back.

Hope this helps!