Data Sources

Zillow Research provides monthly housing market data including home values (ZHVI), observed rents (ZORI), inventory, and market heat metrics for all US geographies.

Redfin provides weekly housing market data including median sale prices, new listings, days on market, and sale-to-list ratios across all US markets.

The Federal Reserve Bank of St. Louis FRED database aggregates 816,000+ economic time series from 108 sources, including S&P/Case-Shiller, BLS, mortgage rates, and macroeconomic indicators.

The US Census Bureau ACS provides annual demographic, housing, and economic estimates for all US geographies from census tract to national level.

The Federal Housing Finance Agency publishes the House Price Index (HPI), a broad measure of single-family house price movements covering transactions on conforming conventional mortgages.

The US Department of Housing and Urban Development provides Fair Market Rents, Income Limits, CHAS housing needs data, and other affordable housing datasets.

The BLS produces the Consumer Price Index (CPI) including rent measures, and the Quarterly Census of Employment and Wages (QCEW) with local employment data.

The BEA provides GDP by metro area, personal income by county, and other regional economic accounts that contextualize local housing markets.

The Home Mortgage Disclosure Act dataset provides loan-level mortgage origination data by census tract, enabling analysis of lending patterns and access to credit.

Monthly new residential construction statistics from the Census Bureau's Building Permits Survey, covering permits, starts, completions, and under-construction units.

The Freddie Mac Primary Mortgage Market Survey (PMMS) is the longest-running weekly survey of mortgage interest rates, covering 30-year and 15-year fixed rates.

The IRS Statistics of Income Division provides annual county-to-county migration data derived from year-over-year address changes on tax returns.