The 26-year-old, who joined the Bantams from non-league outfit Guiseley in 2009, helped the club to win promotion from League Two last season.
Hanson's previous contract was due to expire in the summer.
Bradford boss Phil Parkinson told BBC Radio Leeds: "I feel it's an important signing for us because he's improving all the time."
Hanson has scored six goals in 20 appearances this season.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Port Vale | 17 | 10 | 4 | 3 | 25 | 17 | 8 | 34 |
| 2 | Walsall | 15 | 9 | 3 | 3 | 28 | 15 | 13 | 30 |
| 3 | Crewe AlexandraCrewe | 16 | 8 | 5 | 3 | 20 | 14 | 6 | 29 |
| 4 | Doncaster RoversDoncaster | 17 | 8 | 5 | 4 | 22 | 18 | 4 | 29 |
| 5 | Notts County | 17 | 7 | 7 | 3 | 23 | 15 | 8 | 28 |
| 6 | MK Dons | 16 | 8 | 3 | 5 | 27 | 19 | 8 | 27 |
| 7 | Chesterfield | 17 | 6 | 7 | 4 | 30 | 20 | 10 | 25 |
| 8 | Grimsby Town | 17 | 8 | 1 | 8 | 19 | 26 | -7 | 25 |
| 9 | AFC Wimbledon | 15 | 7 | 2 | 6 | 23 | 14 | 9 | 23 |
| 10 | Bradford CityBradford | 16 | 6 | 5 | 5 | 21 | 17 | 4 | 23 |
| 11 | Gillingham | 16 | 7 | 2 | 7 | 17 | 14 | 3 | 23 |
| 12 | BarrowBarrow | 17 | 6 | 4 | 7 | 17 | 16 | 1 | 22 |
| 13 | Fleetwood TownFleetwood | 14 | 5 | 6 | 3 | 20 | 15 | 5 | 21 |
| 14 | Cheltenham TownCheltenham | 17 | 6 | 3 | 8 | 22 | 25 | -3 | 21 |
| 15 | Salford City | 16 | 5 | 6 | 5 | 15 | 18 | -3 | 21 |
| 16 | Newport CountyNewport | 17 | 6 | 3 | 8 | 19 | 26 | -7 | 21 |
| 17 | Harrogate TownHarrogate | 17 | 6 | 3 | 8 | 16 | 23 | -7 | 21 |
| 18 | Accrington StanleyAccrington | 16 | 4 | 6 | 6 | 22 | 26 | -4 | 18 |
| 19 | Colchester UnitedColchester | 16 | 3 | 8 | 5 | 19 | 22 | -3 | 17 |
| 20 | Tranmere RoversTranmere | 15 | 4 | 5 | 6 | 10 | 18 | -8 | 17 |
| 21 | Bromley | 15 | 3 | 7 | 5 | 17 | 19 | -2 | 16 |
| 22 | Swindon TownSwindon | 17 | 2 | 7 | 8 | 20 | 28 | -8 | 13 |
| 23 | Morecambe | 17 | 3 | 4 | 10 | 17 | 29 | -12 | 13 |
| 24 | Carlisle UnitedCarlisle | 17 | 3 | 4 | 10 | 14 | 29 | -15 | 13 |
| > League Two Full Table | |||||||||
