FHFA House Price Index Data
The FHFA House Price Index distributed as bulk files over anonymous HTTPS GET. The master series at https://www.fhfa.gov/hpi/download/monthly/hpi_master.json returns 186,011 observations spanning 1975 to 2026 across 472 places and 16 index variants in a single ~60 MB application/json document. No key, no query parameters, no pagination — the whole document is served and filtered client-side. Annual, quarterly and monthly cuts are also published as CSV, XLSX and TXT at national, state, metro, county, three-digit ZIP, five-digit ZIP and census-tract level.