State College is the largest borough in Centre County in the U.S. state of Pennsylvania. It is the principal city of the State College, Pennsylvania Metropolitan Statistical Area which encompasses all of Centre County. As of the 2000 census, the borough population was 38,420, (estimated 39,898 in 2009) and roughly double that total lived in the borough plus the surrounding townships. Of that population, 20,011 or 52.1% are males and 18,409 or 47.9% are females.The town is dominated economically and demographically by the presence of the University Park campus of the Pennsylvania State University (Penn State) (see also: college town). "Happy Valley" is an often-used term to refer to the State College area, including the borough and the townships of College, Harris, Patton, and Ferguson.

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