There is plenty of it growing in hedges in my town. I'm not sure what the variety is, though. The ones I see are long-established and appear to have been growing a long time.

Box is hardy at least to the southern edge of Zone 4.

Note: If your Box dies back in the Spring, do not lose hope. Simply prune off all the smaller branches. Leave the main stem. New growth will appear by mid-summer and be 2' tall by Fall.

I removed several Box plants that I thought were dead but they weren't. Don't make the same mistake I did.