Answer 1

This Should help you a lot...

Jigglypuff is a little rare,so dont be frustated if you keep running into
a Taillow,Swellow,Swablu, or a Wingull

Answer 2

http://www.serebii.net/pokearth/hoenn/route115.shtml

Comments

Thanks, but can I get a little less complicated answer?

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Route 115

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I've never seen grass on route 115.... The only pokemon I found on land was a geodude from the rock smash rock...

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You need surf to get to a patch of grass to find jigglypuff.