The March 2000 benchmark data released in February and March have been revised. These revisions affect labor force data for October 2000 through January 2001 and the annual averages for 2000 in all geographic areas except California and Los Angeles. Data for cities and other sub-county areas are provided by county for the current month and for 1990 through 2000 annual averages.
Instructions are available to calculate data for other time periods.
Sub-county labor force is then obtained by summing employment and unemployment, and the result is divided into unemployment to calculate the unemployment rate.