Important Information

Annual Revisions

Each year, historical estimates from the Local Area Unemployment Statistics (LAUS) program are revised to reflect new population controls from the Census Bureau, updated input data, and reestimation. The data for model-based areas also incorporate new seasonal adjustment, and the unadjusted estimates are controlled to new census division and U.S. totals. Substate area data subsequently are revised to incorporate updated inputs, reestimation, and controlling to new statewide totals.

Model-Based Areas

On February 28, 2017, the LAUS program issued 2016 annual-average civilian labor force and unemployment estimates for census regions and divisions; all states and the District of Columbia; the Los Angeles-Long Beach-Glendale, CA Metropolitan Division; the Miami-Miami Beach-Kendall, FL Metropolitan Division; the Chicago-Naperville-Arlington Heights, IL Metropolitan Division; the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area; New York city, NY; the Cleveland-Elyria, OH Metropolitan Statistical Area; and the Seattle-Bellevue-Everett, WA Metropolitan Division, as well as the seven corresponding balance-of-state areas. As described above, the data incorporate new population controls, updated inputs, reestimation of models, and adjustment to new census division and national control totals. Both not-seasonally-adjusted and smoothed-seasonally-adjusted (SSA) monthly data for these areas were revised from January 2012 forward. The updated population controls reflect recent U.S. Census Bureau revisions from April 2010 forward.

Statewide data for Puerto Rico (which are not model-based, but rather are tabulated from a household survey similar to the Current Population Survey for the U.S.) similarly were revised from January 2012 forward. The not-seasonally-adjusted data reflect the incorporation of new population controls, while the SSA data reflect seasonal adjustment and smoothing of the recontrolled not-seasonally-adjusted data.

All annual-average and historical supplemental items on the website containing data for model-based areas, including data files, rank tables, and maps, were updated on or shortly after February 28 to reflect these revisions. Unless otherwise noted, monthly supplemental items for states in December 2016 also were replaced.

Substate Areas

On April 21, 2017, routine revisions were made to data from 2011 through 2015 for geographic areas below the state level (other than the model-based areas noted above), and official annual averages for 2016 were issued. For all of these areas, estimation inputs were revised back to 2015, while the revisions for 201214 consisted of, at minimum, controlling to the new state totals described above. In addition, some states revised at least some of their estimation inputs for some of their areas as far back as January 2010. For this reason, estimates for all non-modeled areas were footnoted as having been subject to revision from January 2010 forward within the time-series database on April 21.


Last Modified Date: April 21, 2017