Metropolitan Statistical Areas (as of January 1, 2008)

The Office of Management and Budget defines Metropolitan Statistical Areas which are principally based upon commuting trends.

Metropolitan Statistical Areas have at least one urbanized area of 50,000 or more population, plus adjacent territory that has a high degree of social and economic integration with the core as measured by commuting ties.  They must have at minimum one county and oftentimes include several counties.

As of January 1, 2008, are 363 Metropolitan Areas in the United States plus 8 in Puerto Rico. Among the 3,141 counties in the United States, 1,092 are included in the 363 areas.

Below in alphabetical order are the Metropolitan Statistical Areas and their county (or equivalent political subdivision) composition. 

Click a letter to take you to a grouping.  Clicking the letter for the grouping will return you to the top.  

If you do not know the name of a Metropolitan Statistical Area or would like to see all which are within a state, click the state below to view a map.  No map is provided for Puerto Rico.

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - R - S - T - U - V - W - Y