The Football League announced crowds broke the 16m barrier for the 4th consecutive season.
The Coca-Cola Championship is the fourth most watched league in Europe, with its total audience of 9.4m fans bettered only by the Premier League, Germany's Bundesliga and Spain's La Liga.
An average 17,022 people visited games in the Championship - down by more than 1,000 on last year's total - with 195 matches being watched by a crowd of more than 20,000 and six by more than 30,000.
Attendances also grew in the Carling Cup and Johnstone's Paint Trophy and Football League chairman Lord Mawhinney said: "These are another set of impressive figures."