because,most of the people use computers.
Every 10 years
There never has been a worldwide census. The census in the US that was conducted in 2010 was a census of people living in the US and its possessions.
Hollerith was an employee of the US Census Bureau. As there were no electronic computers, it was not a computer punch card, but was used in the 1890 census to semi-automate the processing and counting using electromechanical counters and sorters.
The first US census was in 1790.
US Census Bureau: is the government agency that is responsible for the United States Census.
The last US census carried out in 2010 was the 23rd US census to have been carried out. The census found that the population of the US was 308,745,538. This was the first census to record a population of more than 300 million.
281,421,906 According to the 2000 US Census
Charleston, WV Population: 53,421 (US Census 2000) Huntington, WV Population: 51,475 (US Census 2000) Parkersburg, WV Population: 33,099 (US Census 2000) Wheeling, WV Population: 31,419 (US Census 2000) Morgantown, WV Population: 26,809 (US Census 2000) Weirton, WV Population: 20,411 (US Census 2000) Fairmont, WV Population: 19,097 (US Census 2000) Beckley, WV Population: 17,254 (US Census 2000) Clarksburg, WV Population: 16,743 (US Census 2000) Martinsburg, WV Population: 14,972 (US Census 2000)
The US Census recorded 64,356 residents.
The US census is taken every 10 years
I dont know if you want to know about that you could google it on your computer right now