The 2004–05 North West Counties Football League season was the 23rd in the history of the North West Counties Football League, a football competition in England. Teams were divided into two divisions: Division One and Division Two.
| Competition: | North West Counties Football League Division One |
| Season: | 2004–05 |
| Winners: | Fleetwood Town |
| Promoted: | Fleetwood Town |
| Relegated: | Great Harwood Town |
| Matches: | 462 |
| Total Goals: | 1491 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
Division One featured four new teams promoted from Division Two
| Competition: | North West Counties Football League Division Two |
| Season: | 2004–05 |
| Winners: | Cammell Laird |
| Promoted: | Cammell Laird Silsden |
| Relegated: | None |
| Matches: | 342 |
| Total Goals: | 1206 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
Division Two featured three new teams: