The 1966 County Championship was the 67th officially organised running of the County Championship. Yorkshire won the Championship title.
The method of obtaining points for the first innings was changed with two points awarded for a first innings lead for any match won, lost or drawn.
Table 10 points for a win 5 points to each team for a tie 5 points to team still batting in a match in which scores finish level 2 points for first innings lead 1 point for first innings tie If no play possible on the first two days, and the match does not go into the second innings, the team leading on first innings scores 6 points. If the scores are level, the team batting second scores 3 points. Position determined by points gained. If equal, then decided on most wins. Each team plays 28 matches. The first innings in the first 102 matches of the season (first 12 games played by each county on a home and away basis) was restricted to 65 overs. Normal conditions applied to return matches or when teams met only once in the season.
+TeamPWLDNoDec1stInnsLead1stInnsTiePts1Yorkshire 2815 5 8 0 17 01842Worcestershire 2813 5 9 1 18 01663Somerset 2813 7 7 1 13 01564Kent 2811 8 8 1 17 01445Northamptonshire 2810 9 9 0 15 01306Warwickshire 288 8 10 2 16 11137Surrey 288 3 16 1 15 01108Leicestershire 288 7 12 1 14 01089Derbyshire 288 12 7 1 8 09610Sussex 286 11 11 0 16 09211Hampshire 285 4 181 15 087=12Lancashire 286 11 8 3 13 086=12Middlesex 286 5 14 3 13 08614Glamorgan 286 8 131 10 08515Gloucestershire 286 12 9 1 7 17516Essex 284 10 11 3 10 06017Nottinghamshire 283 11 12 2 8 046
References