I suspect that "The Numbers" came about b/c nobody from inner Portland bothered to learn the names of the different neighborhoods. From wiki:  Argay, Parkrose, Parkrose Heights, Russell, Wilkes, and Woodland Park are in Northeast Portland. Glenfair and Hazelwood are split between Northeast and Southeast sections. Centennial, Lents, Mill Park, Pleasant Valley, and Powellhurst-Gilbert are in Southeast Portland