[VincentEvans]

Using your own contrived math - if you have just 30 helpers - you can count population of China in 1 year. Or with 219 helpers you can do the same for world population.

In US, for the 2020 decennial census, the U.S. Census Bureau hired approximately 500,000 temporary workers across the country to assist with the count.

[epolanski]

> In US, for the 2020 decennial census, the U.S. Census Bureau hired approximately 500,000 temporary workers across the country to assist with the count.

Thus..it's difficult and expensive.

[triknomeister]

US spent 13.7B on census which is 1.37B/year since a census is done per 10 year. The ROI is definitely huge. It's not expensive at all.

[angelgonzales]

It seems expensive at around $4-5 per person per year! I think a satellite could gather useful population information based on a year of observing people entering and leaving their homes. I also wonder why the government needs to account for everyone in America? Can’t it just account for taxpayers who voluntarily work with the government system at the state and federal level?

[AlotOfReading]

The census collects information on everyone because that's what the Constitution says it has to do. There's a bit over 200 years of case law arguing the specifics (e.g. how to handle the "Indians not taxed" exception), but in modern times it's interpreted to mean literally everyone.

[lcnPylGDnU4H9OF]

> It seems expensive at around $4-5 per person per year!

On the contrary, that is a small percentage of the taxes I pay from a single paycheck.