What a census can count, and what it cannot
This atlas cites census figures on nearly every page. Each one is real, and each one is also a choice: who asked, what they asked, and who answered. A short guide to reading our numbers.
Three different questions produce three different numbers for the same people. Self-identification counts everyone who tells a census taker they belong: about 1.5 million Americans identified as Cherokee alone or in combination in 2020. Enrolment counts citizens on a nation's own rolls: the Cherokee Nation enrols about 450,000. Speaker counts measure the language instead of the people: roughly 2,000 people speak Cherokee as a first language. All three are true at once, and each answers a different question.
The gaps run the other way too. In Paraguay, the Indigenous Guarani peoples number 76,506 in the 2022 Indigenous census, while the Guarani language is spoken in about two of every three Paraguayan households: a language can be far larger than the peoples it comes from. And in Bolivia, self-identification fell by twenty-one percentage points between the 2001 and 2012 censuses, not because a million people vanished but because the question changed and so did what answering it meant.
How this site handles it
Every figure on this platform names its instrument and its year: a 2017 self-identification count is not a 2012 belonging count, and neither is an enrolment roll. We never add figures from different instruments together, we prefer the counted number to the rounded estimate, and where a number is contested we say so rather than picking a side quietly. When a people's own count differs from a state's count, that difference is information, not an error.
Censuses also miss people: urban migrants, borderland communities counted by two states or neither, and everyone with reason to distrust the person holding the form. Numbers open the door to a people's scale; they do not measure a people's reality. The pages here are built to hold both facts at once.