CITIGROUP INC revenue for the last year amounted to 81.14 B USD, the most of which — 20.37 B USD — came from its highest performing source at the moment, United States Personal Banking, the year earlier bringing 19.19 B USD. The greatest contribution to the revenue figure was made by North America — last year it brought CITIGROUP INC 40.08 B USD, and the year before that — 36.66 B USD.