FAA has published a list of the next VORs to be decommissioned as part of its plan to establish a minimum operational network (MON) of the ground-based navigation aids. The list is part of a news item at AOPA that explains the process.
Most of the 35 VORs on this list are in the eastern two-thirds of the continental U.S. Only one, ECA, is in the West, near Stockton, CA.
You can find more background the FAA’s plan to decommission VORs at BruceAir, here.