Lyric discussion by plosion 

This is from u2.com, and I think it explains what the song is about really well...

"An interesting story that someone told me once is that in Belfast, by what street someone lives on you can tell not only their religion but tell how much money they’re making - literally by which side of the road they live on, because the further up the hill the more expensive the houses become. You can almost tell what the people are earning by the name of the street they live on and what side ot that street they live on. That said something to me, and so I started writing about a place where the streets have no name...." -bono

That place Bono doesn't mention is Heaven, where the streets have no name.

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