The Cobblers were the 8th best supported club in League Two with an average gate of 4,604, up from 4,427 the previous season. The crucial final home game of the campaign against Stevenage attracted the biggest attendance at 6,257 against last season's best of 5,647 for the visit of Notts County.
Although Championship and League One crowds were down on last season, League Two saw an increase in fan attendance, up 8% with an average of 4,162 a game in 2010/11.
Football League chairman Greg Clarke paid tribute to fans, saying: “Given the difficult economic climate, it is heartening to see League crowds reaching the sixteen million mark, once again. Our competitions are in good shape and the enduring loyalty shown by fans is a constant encouragement.
“However, we have to be realistic about the challenges we face as it is unlikely that the state of economy will improve in the near future. The League and its clubs will continue to focus on getting new fans into grounds and ensuring that the clubs they support are sustainable in the long term.”