The official site includes access tools, current economic indicators, and more. Within that page, data.census.gov has an interactive tool for exploring data.
Statistics on gross domestic product (GDP), consumer spending, income & saving, industries, international trade & investments, prices & inflation, and more.
Statistics on the country's transportation system, including the movement of people and goods and the consequences of transportation for the economy, society, and the environment.
From the Federal Interagency Forum on Child and Family Statistics, contains statistics and reports on population, family characteristics, economic security, health, behavior, social environment, and education.
Statistics on agriculture, including production and supplies of food and fiber, prices paid and received by farmers, farm labor and wages, farm finances, chemical use, and changes in the demographics of U.S. producers.
As the National Data Book, it contains a collection of statistics on social and economic conditions in the United States. Selected international data are also included. (Discontinued as of 2012, still useful for historical statistics.)
A convenient arrangement of frequently-used government documents (e.g. Consumer Price Indexes, Budget of the US Government, CDC Travel Information). Maintained by Columbia University.
Database from the Federal Reserve Bank of St. Louis; includes both national and international economic data, including price indexes, exchange rates, interest rates, GDP, trade balances, and more.