Inkberry holly -- they get leggy with time, but they're readily available and not expensive, so they're reasonable to replace.

Northern or southern bayberry might work.

Most of the better hedging plants for this area IMO are not evergreen.

If you have deer in your area, keep in mind that they will EAT your privacy.
That has happened to me in N. CA. so be sure you plant what they don't like to eat. Min

You'll probably have a broader selection of plants to choose from if you don't limit yourself to only native plants.

But if that is a carved in stone criteria and you don't have deer concerns then possibly a vaccinium or viburnum might be a consideration.

Just for the fun of it, below is a photo of a well planted and artistically concealed trash enclosure that I saw recently in Singapore.

I would encourage this group of community gardeners to acquaint themselves with the interesting subject of plants native to America. Ann Leighton's book titled "American Gardens in the Eighteenth Century" is an accurate and enjoyable historical read on the subject.

The native shrub Mt. Laurel (Kalmia latifolia) meets the conditions described as needed to conceal a compost pile. Evergreen, remains dense grown in shade, quite maintenance free, grows 5-8' at maturity, spring blooms.

Kalmia is a good suggestion -- but, in my experience, it can be fussy about soil conditions in this area. It's a bit hot for its taste in the coastal plain unless the soil and light conditions are just right.

The viburnums are by and large not evergreen -- nor are other excellent hedging plants like ninebark.