Districts in the OL area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| OL1 | Oldham | Oldham | 5 | 777 |
| OL2 | Royton | Oldham | 4 | 1,090 |
| OL3 | Uppermill | Oldham | 3 | 595 |
| OL4 | Oldham | Oldham | 5 | 1,048 |
| OL5 | Mossley | Tameside | 2 | 370 |
| OL6 | Ashton-under-Lyne | Tameside | 5 | 898 |
| OL7 | Ashton-under-Lyne | Tameside | 2 | 421 |
| OL8 | Oldham | Oldham | 4 | 849 |
| OL9 | Chadderton | Oldham | 5 | 972 |
| OL10 | Heywood | Rochdale | 5 | 820 |
| OL11 | Rochdale | Rochdale | 5 | 1,077 |
| OL12 | Rochdale | Rochdale | 5 | 1,185 |
| OL13 | Bacup | Rossendale | 4 | 658 |
| OL14 | Todmorden | Calderdale | 5 | 788 |
| OL15 | Littleborough | Rochdale | 3 | 539 |
| OL16 | Rochdale | Rochdale | 6 | 1,125 |