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Metropolitan Division refers to a county or group of counties within a Metropolitan Statistical Area that has a population core of at least 2.5 million.
Note that the number of series revisions in a category and its subcategories is shown above in parentheses.
Here, series revisions are defined as distinct series plus any real-time changes to series attributes: title, frequency, units, seasonal adjustment, and notes.
Revisions to data values are not included in counts.