A skid row, also called skid road, is an impoverished area, typically urban, in English-speaking North America whose inhabitants are mostly poor people "on the skids". This specifically refers to people who are poor or homeless, considered disreputable, downtrodden or forgotten by society. A skid row may be anything from an impoverished urban district to a red-light district to a gathering area for people experiencing homelessness or drug addiction. In general, skid row areas are inhabited or frequented by impoverished individuals and also people who are addicted to drugs.
https://en.wikipedia.org/wiki/Skid_row