shantytown

Noun

shanty town (plural shanty towns)

1. (derogatory, informal, sometimes) An urban settlement composed predominantly of self-built, low-quality dwellings, often occupied by low-income households lacking secure land tenure.
   • The navvies of the Midland Railway toiled for years to build it, enduring grim conditions in shanty towns that were built miles from civilisation. But build it they did, to form part of the Midland's main line between London St Pancras and Carlisle via Sheffield and Leeds from 1876.2020 May 20, Philip Haigh, “Ribblehead: at the heart of the S&C's survival and its revival”, in Rail, page 26

   Synonyms:

   Hooverville, slum