U.S. County Business Patterns — number of businesses, employees, and payroll by industry (NAICS) and state.

U.S. Census demographic data by state or county. Population, income, poverty, unemployment, home values, education.

Energy price data from EIA. WTI crude oil, Brent crude, natural gas (Henry Hub), and U.S. retail gasoline prices.

U.S. CPI inflation data from BLS. Tracks all items, core, food, energy, shelter, and medical care indices.

U.S. labor market data from BLS. Unemployment rate, nonfarm payrolls, job openings, quits rate, and wages.

Macroeconomic indicators from FRED (St. Louis Fed). GDP, Fed funds rate, Treasury yields, housing starts, retail sales.

U.S. Treasury data — national debt (daily) and average interest rates on Treasury securities.