Calendars & Dates » Census Years

List of United Kingdom censuses (Wikipedia)

Including the dates of enumerations.

The National Archives - Research Guides - Census records

Tom Nunamaker's Census Age Calculator

For UK census years.

U.S. Census Bureau - Census Dates for Countries and Areas of the World: 1945 to 2014 (Wayback Machine)

Shows the dates of census enumerations over the past half century, as well as projected or scheduled enumerations in the near future. for countries around the world.

UK Census Dates