How many federal holidays does the United States observe each year?

How to get close to this number

Count what you would expect a country to mark. New year, a national day, a handful of commemorations, a couple of religious or seasonal holidays, and some figures from national history — that structure produces roughly ten to twelve in most countries, and this one sits squarely in that band.

The limitation in the explanation is the thing most people get wrong: federal holidays bind federal offices, not private employers. So the list is not a statement about who gets a day off; it is an administrative schedule for one employer that happens to be the government. Many workers get none of them and some get more.

The list is also nearly frozen. The most recent addition was the first in almost four decades, which tells you that adding one is a substantial political act rather than an administrative update. Any figure like this describes a list that changes on a generational timescale, which makes it stable enough to ask about and worth stamping with a year anyway.