FRED, Federal Reserve Economic Data, is the time series database of the Research Division at the Federal Reserve Bank of St. Louis, which presents it as a source of economic data since 1991. It produces few of its numbers itself: it gathers them from national, international, public and private sources - the Bureau of Labor Statistics, the Bureau of Economic Analysis, the Federal Reserve Board, Realtor.com and many more - and republishes them in one format, one page per series.
FRED describes its holdings as hundreds of thousands of series. The largest branch of the category tree is U.S. Regional Data, with state series and groupings by Census and BEA regions and Federal Reserve districts; the others cover money and banking, employment and labor markets, national accounts, production and business activity, prices, international data and academic data sets. Interest rates, CPI and inflation, GDP, exports and the unemployment rate sit beside narrow series such as egg prices, gas prices and home prices.
FRED belongs to a family of St. Louis Fed services: ALFRED keeps vintages, FRASER covers U.S. financial, economic and banking history, and the release calendar lists what is published each day.