I'm currently building a town in Minecraft Pocket Edition and I'm wondering how many blocks long and how many blocks wide the world is.
This question is quite vague, however I believe that you are asking what size the entire world is in Minecraft pocket edition.
According to Minecraft Wiki:
As of the 0.9.0 update, worlds are infinite. This means that the farther you walk out, the more chunks you load. Unfortunately, there is a "limit" of sorts. This is called the farlands. After traveling out 12,550,745 blocks, you'll be at the very edge of the farlands. It's rather unlikely you'll ever reach that point though, due to these factors.
If you go truly quite a distance to 32,000,000 blocks out, you'll encounter what Tommasso Checchi has dubbed, the Stripe Lands. Blocks past this point are "fake" and you can fall right through them.
If you choose to make an "old", or limited size world, the world size is
protected by fredley♦ Jun 17 '13 at 9:03
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