Title: MSAs Redefined: 2003 Metropolitan Statistical Areas

Author:

Section/SPIG: Health Administration

Issue Date:

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Effective June 2003, metropolitan statistical areas (MSAs) have been substantially redefined. In the United States, metropolitan areas are normally defined by the corresponding metropolitan statistical area and a new entity referred to as micropolitan statistical areas.

These area designations delineate the geography covered by a metropolitan area. Learn what the changes mean for accessing data. All metro areas, including newly designated ones, are listed on this site. Select your state from the list in the left navigation bar to see a map of that state's MSAs. Registration at the site, <http://proximityone.com/metros.htm>, is required to get access to the 2003 data and updates.