ARMSTRONG COUNTY, PENNSYLVANIA

COUNTY SEAT:  Kittanning           YEAR FOUNDED:  1800

 

Land Area

 653 square miles

 

2000 Population

  72,392 persons

Water Area

  11 square miles

 

 

 

County Area

  664 square miles

 

Population Density

 109 persons per square mile

 

 

 

 

 

Armstrong County contains a total land area of 664 square miles and according to the 2000 census contained a population of 72,392 persons.  This is a net decrease of 1,134 persons (1.54%) from the 1990 census of 73,526 persons.  The United States Census Bureau estimates the population of Armstrong County in 2004 to be 71,395, which continues the previous decade’s trend.