This dataset focuses on mortgages that are 90 or more days delinquent at the county level across the United States, spanning from January 2008 to March 2018. "Mortgages 90 or more days delinquent" refers to a specific category within the mortgage industry that tracks the number of home loans that are significantly past due on payments. A mortgage is considered delinquent when a borrower fails to make a scheduled mortgage payment within the agreed-upon timeframe. Understanding these delinquencies is crucial for assessing the financial health of homeowners and the housing market within various regions, aiding in economic analysis and policy formulation.