In the final chapter of Evicted, "About this Project," Matthew Desmond discusses the methods he used to collect the stories, information, and data used to write the book. In addition to his extensive fieldwork, he also designed and administered several surveys in partnership with the University of Wisconsin Survey Center and made the data available to the public.
Desmond also mentions on page 331 that he analyzed data from a national-representative survey called the Fragile Families and Child Wellbeing Study from Princeton University:
Create reports and maps based on US Census data and demographic information. Create an account on the site to save your maps. (Social Explorer)
Access a data and mapping resource that combines demographic, health, employment, and socioeconomic data about communities, census tracts, and other regions within the United States. (PolicyMap)