The United States Office of Management and Budget has designated Indiana County as the Indiana, PA Micropolitan Statistical Area (µSA).
 As of the 2010 U.S. Census the micropolitan area ranked 4th most populous in the State of Pennsylvania and the 50th most populous in the United States with a population of 88,880.
 Indiana County is also a part of the Pittsburgh-New Castle-Weirton, PA-OH-WV Combined Statistical Area (CSA), which combines the population of Indiana, as well as the Allegheny, Armstrong, Beaver, Butler, Fayette, Lawrence, Washington and Westmoreland county areas in Pennsylvania.
 In West Virginia the counties included are Brooke and Hancock.
 And in Ohio, Jefferson County.
 The Combined Statistical Area ranked 4th in the State of Pennsylvania and 20th most populous in the United States with a population of 2,660,727.
The United States Office of Management and Budget has designated Indiana County as the Indiana, PA Micropolitan Statistical Area (µSA).  As of the 2010 U.S. Census the micropolitan area ranked 4th most populous in the State of Pennsylvania and the 50th most populous in the United States with a population of 88,880.  Indiana County is also a part of the Pittsburgh-New Castle-Weirton, PA-OH-WV Combined Statistical Area (CSA), which combines the population of Indiana, as well as the Allegheny, Armstrong, Beaver, Butler, Fayette, Lawrence, Washington and Westmoreland county areas in Pennsylvania.  In West Virginia the counties included are Brooke and Hancock.  And in Ohio, Jefferson County.  The Combined Statistical Area ranked 4th in the State of Pennsylvania and 20th most populous in the United States with a population of 2,660,727.
Indiana County, Pennsylvania