Online and free through FamilySearch.org (sign-in required):

• 1950 U.S. Census
  
• 1940 U.S. Census
  
• 1930 U.S. Census
  
• 1920 U.S. Census
  
• 1910 U.S. Census
  
• 1900 U.S. Census
  
• 1880 U.S. Census
  
• 1870 U.S. Census
  
• 1860 U.S. Census
  
• 1850 U.S. Census
  
• 1840 U.S. Census
  
• 1830 U.S. Census
  
• 1820 U.S. Census
  
• 1810 U.S. Census
  
• 1800 U.S. Census
  
• 1790 U.S. Census
  

• Online through Penn State's Pennsylvania's Past History Collection.
• Centre Lines online project with more than 200 family name pages - with indiviuals listed in the directory and organized alphabetically (rather than by boroughs/townships).
• Re-compiled with an index in 1998 and published as Eleventh Census of the Population of the United States Published by Boroughs and Townships in Connection with a Business Directory of the Same. Available for use at the Pennsylvania Room or purchase through the Friends of the Centre County Library and Historical Museum.

• 1930 Census Online Index: This joint effort between the Centre County PAGenWeb Project and the Centre County Genealogical Society created a searchable online index to the county's part of the 1930 U.S. Census.
• 1950 Census Enumeration Districts for Centre County