The new sites are in Delaware, Massachusetts, Nebraska, Ohio, Pennsylvania, and Rhode Island, and bring the network up to 2,200 total sites.
Their coverage map shows a solid presence from Michigan to Texas and then west to San Diego. Most of the East Coast and eastern Canada is also covered, as is the Oregon region. But, weirdly, most of California is not covered.
But there are other alternatives for small-scale recycling. You can go to Staples, which will recycle Dell items for free, and other office electronics for a fee. Best Buy will take individual computers, but they want the hard drives removed. Office Depot recycles by the unsealed box-load, and sells those boxes for either $5, $10, or $15.