On April 27, 2016, data from January 2010 forward were updated based on revised historical not-seasonally-adjusted estimates and re-fitting of seasonal adjustment models. The seasonal adjustment models for the Portsmouth, NH-ME Metropolitan NECTA from January 2000 through December 2009 also were re-fitted to remove an outlier.
Effective with the release of metropolitan area data for May 2011, the Local Area Unemployment Statistics (LAUS) program began to publish seasonally-adjusted civilian labor force and unemployment estimates for all metropolitan areas and metropolitan divisions. These data are updated via the downloadable files below on the day of each Metropolitan Area Employment and Unemployment news release. (See www.bls.gov/schedule/news_release/metro.htm for a schedule of upcoming release dates.) The files contain estimates from January 1990 forward. The statistical technique used to adjust estimates is SEATS, or Signal Extraction in ARIMA (Auto Regressive Integrated Moving Average) Time Series. For each area and division, separate SEATS specifications are used to seasonally adjust employment and unemployment levels, from which civilian labor force levels and unemployment rates are then derived. The SEATS specifications also vary by decade (1990-99, 2000-09, and 2010 forward), to minimize performance problems stemming from decennial discontinuities in the not-seasonally-adjusted input data.
For the sake of completeness, data for model-based areas and divisions are included in the files below. These are the Cleveland-Elyria and Detroit-Warren-Dearborn metropolitan areas and the Chicago-Naperville-Arlington Heights, Los Angeles-Long Beach-Glendale, Miami-Miami Beach-Kendall, and Seattle-Bellevue-Everett metropolitan divisions. Data for these model-based areas and divisions are smoothed via a Trend-Cycle Cascade Filter, as are the model-based data for states.
Last Modified Date: April 27, 2016