The defender was out of contract following the 2014-15 campaign, in which he made 37 appearances in all competitions for the Baggies.
The new deal will keep the Northern Ireland international, who joined West Brom in 2011, with Tony Pulis's side throughout next season.
McAuley has played 138 times for the club since completing his move from Ipswich Town.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Leeds UnitedLeeds | 17 | 10 | 5 | 2 | 31 | 12 | 19 | 35 |
| 2 | Sheffield UnitedSheff Utd | 17 | 11 | 4 | 2 | 24 | 9 | 15 | 35 |
| 3 | Burnley | 17 | 9 | 6 | 2 | 21 | 6 | 15 | 33 |
| 4 | Sunderland | 17 | 9 | 6 | 2 | 26 | 12 | 14 | 33 |
| 5 | Watford | 17 | 9 | 2 | 6 | 26 | 24 | 2 | 29 |
| 6 | Middlesbrough | 17 | 8 | 3 | 6 | 29 | 20 | 9 | 27 |
| 7 | West Bromwich AlbionWest Brom | 17 | 6 | 9 | 2 | 18 | 11 | 7 | 27 |
| 8 | Blackburn RoversBlackburn | 16 | 7 | 4 | 5 | 20 | 17 | 3 | 25 |
| 9 | Millwall | 16 | 6 | 6 | 4 | 19 | 14 | 5 | 24 |
| 10 | Norwich CityNorwich | 17 | 5 | 7 | 5 | 31 | 25 | 6 | 22 |
| 11 | Swansea CitySwansea | 17 | 6 | 4 | 7 | 16 | 15 | 1 | 22 |
| 12 | Bristol City | 17 | 5 | 7 | 5 | 20 | 21 | -1 | 22 |
| 13 | Sheffield WednesdaySheff Weds | 17 | 6 | 4 | 7 | 20 | 26 | -6 | 22 |
| 14 | Stoke CityStoke | 17 | 5 | 6 | 6 | 19 | 20 | -1 | 21 |
| 15 | Derby CountyDerby | 17 | 5 | 5 | 7 | 21 | 22 | -1 | 20 |
| 16 | Luton TownLuton | 17 | 5 | 3 | 9 | 18 | 29 | -11 | 18 |
| 17 | Coventry CityCoventry | 17 | 4 | 5 | 8 | 22 | 25 | -3 | 17 |
| 18 | Oxford UnitedOxford Utd | 17 | 4 | 5 | 8 | 19 | 27 | -8 | 17 |
| 19 | Preston North EndPreston | 17 | 3 | 8 | 6 | 16 | 24 | -8 | 17 |
| 20 | Plymouth ArgylePlymouth | 17 | 4 | 5 | 8 | 18 | 34 | -16 | 17 |
| 21 | Cardiff CityCardiff | 17 | 4 | 4 | 9 | 15 | 26 | -11 | 16 |
| 22 | Hull City | 17 | 3 | 6 | 8 | 16 | 23 | -7 | 15 |
| 23 | Queens Park RangersQPR | 17 | 2 | 8 | 7 | 15 | 26 | -11 | 14 |
| 24 | Portsmouth | 15 | 2 | 6 | 7 | 16 | 28 | -12 | 12 |
| > Championship Full Table | |||||||||
