FRED: Federal Reserve Economic Data Resource Guide
FRED — the Federal Reserve Economic Data database — is the primary public platform through which the Federal Reserve Bank of St. Louis publishes and distributes economic and financial time-series data. This page explains what FRED is, how its data infrastructure operates, the professional scenarios in which it is most commonly used, and the boundaries researchers and analysts must recognize when interpreting its outputs. FRED serves as a foundational resource for monetary policy analysis, academic research, journalism, and financial practice in the United States and globally.
Definition and scope
FRED is a free, publicly accessible online database maintained by the Federal Reserve Bank of St. Louis that aggregates more than 800,000 time-series data sets drawn from over 100 national and international sources. These sources include the U.S. Bureau of Labor Statistics (BLS), the Bureau of Economic Analysis (BEA), the U.S. Census Bureau, the Board of Governors of the Federal Reserve System, the International Monetary Fund (IMF), the World Bank, and the Organisation for Economic Co-operation and Development (OECD).
The database spans macroeconomic indicators — gross domestic product, consumer price index, unemployment rate, personal consumption expenditures — alongside banking and financial metrics such as the federal funds rate, bank reserve balances, and Treasury yield curves. Regional economic data covering all 50 states and metropolitan statistical areas are also included.
FRED is part of the broader research and public education mission described on the Federal Reserve economic research and publications page. Its scope distinguishes it from internal Federal Reserve modeling systems: FRED is explicitly designed for external public use, with data available via browser interface, downloadable files, and a documented API.
How it works
The FRED platform operates through a structured data ingestion, standardization, and delivery pipeline maintained by the St. Louis Fed's research division.
Data ingestion and sourcing
Source agencies submit or publish data according to their own release calendars. The St. Louis Fed ingests these releases, assigns each series a unique identifier (a FRED series ID, such as "UNRATE" for the civilian unemployment rate or "CPIAUCSL" for the Consumer Price Index for All Urban Consumers), and maps the series to standardized metadata fields including frequency, units, seasonal adjustment status, and source attribution.
Standardization and revision tracking
A defining structural feature of FRED is its handling of data revisions. When a source agency revises a historical figure — as the BEA regularly does with GDP estimates — FRED logs the revision and, through the ALFRED (ArchivaL Federal Reserve Economic Data) companion system, preserves the vintages of data as they existed at prior points in time. ALFRED allows researchers to reconstruct what data looked like on any given release date, which is essential for real-time analysis and policy backtesting.
Access and delivery
Users access FRED through three channels:
- Web interface — Interactive charts with customizable date ranges, transformation options (percent change, log, index), and downloadable outputs in CSV, Excel, and JSON formats.
- FRED API — A REST-based application programming interface that allows programmatic queries. The API supports series observation retrieval, release calendars, category browsing, and source metadata, documented at api.stlouisfed.org.
- FRED Add-In for Microsoft Excel — A plugin enabling direct data pulls into spreadsheet workflows.
These access modalities distinguish FRED from proprietary data terminals such as Bloomberg or Refinitiv Eikon, which require paid subscriptions and do not publish their underlying methodology under open-access terms.
Common scenarios
Monetary policy research
Economists analyzing the transmission mechanism of monetary policy use FRED to assemble long-run time series comparing the federal funds rate against inflation measures such as the PCE price index (FRED series "PCEPI") or the CPI. The dual mandate of maximum employment and stable prices makes the UNRATE and PCEPI series among the most frequently cited in Federal Reserve communications, including the Humphrey-Hawkins testimony delivered semiannually to Congress.
Yield curve analysis
Fixed-income analysts and macroeconomists use FRED to track the spread between Treasury maturities — for instance, the 10-year minus 2-year Treasury constant maturity spread (series "T10Y2Y") — as an indicator of recession probability. The yield curve and Federal Reserve policy relationship is directly observable through FRED's daily Treasury yield data.
Academic and journalistic use
FRED's data is embeddable via shareable chart URLs, which supports its widespread use in peer-reviewed economic journals and news publications. The platform's citation standards specify that data sourced from FRED should attribute both the original releasing agency and the Federal Reserve Bank of St. Louis as the aggregating distributor.
Regional economic monitoring
State-level series such as the unemployment rate by state, housing starts by region, and personal income by metropolitan area enable granular analysis that aggregate national figures obscure. For context on the broader Federal Reserve structure that governs these regional data efforts, the Federal Reserve structure and organization page details the roles of the 12 Federal Reserve Banks.
Decision boundaries
What FRED is not
FRED is a data distribution platform, not an analytical or forecasting system. The database does not generate economic projections, policy recommendations, or model outputs. Forecasts attributed to the Federal Reserve — such as the Summary of Economic Projections published by the Federal Open Market Committee — are separate documents not housed within FRED's time-series infrastructure.
Revision lag and vintage awareness
Analysts using the most recent FRED vintage for backtesting risk conflating data-as-revised with data-as-known. The ALFRED system addresses this, but only when explicitly queried. A researcher comparing policy decisions made in 2001 against GDP figures pulled from FRED in the present day may be using figures revised substantially since 2001. Failure to use vintage-matched data is a documented methodological error in real-time policy evaluation literature.
Seasonal adjustment distinctions
FRED hosts both seasonally adjusted (SA) and not seasonally adjusted (NSA) versions of most series, identified by distinct series IDs. Mixing SA and NSA series in the same analysis — for example, combining seasonally adjusted payroll employment with NSA retail sales — produces misleading volatility patterns. Each series page on FRED explicitly labels adjustment status, and the St. Louis Fed's FRED Blog documents adjustment methodology for major series.
Scope relative to the broader Federal Reserve resource network
FRED covers economic and financial time-series data. It does not publish supervisory guidance, regulatory text, bank examination findings, or stress test results — those are released through the Board of Governors' official publications. For a broader orientation to Federal Reserve data resources and institutional scope, the main resource index provides navigational context across Federal Reserve topics.