Source: [1] Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. The points system until the 1990–91 season: 2 points for a win, 1 point for a draw and 0 points for losing. (C) Champions; (P) Promoted; (R) Relegated Notes:
Source: [2] Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. The points system until the 1990–91 season: 2 points for a win, 1 point for a draw and 0 points for losing. (C) Champions; (P) Promoted; (R) Relegated Notes:
Source: [3] Rules for classification: 1) points; 2) goal difference; 3) number of goals scored. The points system until the 1990–91 season: 2 points for a win, 1 point for a draw and 0 points for losing. (C) Champions; (P) Promoted
Promotion and relegation
Division One
In the first season of the North West Counties Football League Division One second placed Rhyl and third placed Horwich RMI moved to the Northern Premier League while Nantwich Town were relegated to Division Two and Netherfield joined Division One from the Northern Premier League.
Division Two
Division Two champions Radcliffe Borough and second placed Caernarfon Town were promoted to Division One while Kirkby Town and already relegated New Mills left the League at the end of the season. Padiham were relegated to Division Three.
Division Three
Division Three champions Colne Dynamoes and second placed Warrington Town were promoted to Division Two while Wigan Rovers left the League at the end of the season and were replaced by newly admitted Cheadle Town and Urmston Town.