The US Constitution says we need one every ten years. And population numbers matter. The amount of congress people depend on the number of people living in that state. So Florida will be getting more after the next census and probably Michigan will have less.
A census happens every 10 years and they do it because they want to know how many people are living in a country.
In the UK and USA it happens every 10 years, but for the USA the next census is 2020, 2030 etc and for the UK it is 2011, 2021 etc.
the National census is taken every ten years to have an acurate count of the people in the world
In the USA the national census is taken every ten years. To date, this seems logical.
A census is held in Ireland every 5 years. The last was in 2011 and the next will be in 2016.
William the First, Doomsday Book in 1086. After that the Census Bill was presented to Parliament in November 1800, received the royal assent on the 31st December and the census was started March 1801
Census is done every 10 years and the United States Census Bureau is the principle agency responsible for producing the data.
The Census is taken every 10 years.
in 2000, the US census is done every 10 years
Federal census is taken every 10 years. Some regional census polls are taken more often, but the law is for every 10 years.
The US Census is taken every ten years in the years ending in zero.
Every five years
ever 10 years
Every ten years with the official United States census.
Every 10 years
In the United States, the census is conducted every 10 years. The next census will be in 2010.
A census is held in Ireland every 5 years. The last was in 2011 and the next will be in 2016.
Every 10 Years =]
The All India Wild Animal Census is done every four years. The census was last carried out in May 2014.
A Cencus must be taken every 10 years Unknown standard
William the First, Doomsday Book in 1086. After that the Census Bill was presented to Parliament in November 1800, received the royal assent on the 31st December and the census was started March 1801