The methodology for our 2018 ranking largely corresponds to that used in previous years. We seek to measure the robustness of metro areas’ growth both recently and over time, with some minor corrections to mitigate the volatility that the Great Recession has introduced into the earlier parts of the time series. The ranking is based on three-month rolling averages of the U.S. Bureau of Labor Statistics’ “state and area” unadjusted employment data reported from November 2006 to January 2018.
The data reflect the North American Industry Classification System categories, including total nonfarm employment, manufacturing, financial services, business and professional services, educational and health services, information, retail and wholesale trade, transportation and utilities, leisure and hospitality, and government.
We used five measures of growth to rank all 422 metropolitan statistical areas for which full data sets were available from the past 15 years, up from 421 last year. “Large” areas include those with a current nonfarm employment base of at least 450,000 jobs. “Midsize” areas range from 150,000 to 450,000 jobs. “Small” areas have as many as 150,000 jobs.
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