How large is the U.S. national debt?

How to get close to this number

Take a multiple of the economy. The country has an economy of around twenty-eight trillion, and gross federal debt runs somewhat above one hundred percent of output. A bit more than the size of the economy gives a figure in the mid-thirties of trillions.

The per-person conversion in the explanation is the standard framing: roughly a hundred and five thousand dollars per resident. Debt totals in the trillions are unjudgeable, and dividing by population turns a political abstraction into a number comparable with a household mortgage.

The composition caveat is the one usually omitted: about a fifth is intragovernmental, money the government owes to its own trust funds. Netting that out gives a meaningfully smaller figure for debt held by the public, which is the number economists actually use — so the headline total and the economically relevant total differ by trillions.