| Tournament Format: | League system |
| Champions: | Worcestershire |
| Previous Year: | 1963 |
| Previous Tournament: | 1963 County Championship |
| Next Year: | 1965 |
| Next Tournament: | 1965 County Championship |
The 1964 County Championship was the 65th officially organised running of the County Championship.[1] Worcestershire won their first Championship title.[2]
Worcestershire's 41-point margin over the second-placed team was the largest in the competition since 1957, and they won the title with three matches to spare.[3] They went to the top of the county table on 7 August from their Midlands rivals, Warwickshire, and finished the season with seven wins and a draw from their last eight matches to clinch the championship.[4]
| Position | Team | Played | Won | Lost | Drawn | No Dec | 1st inn leadmatch L | 1st inn leadmatch D | Points | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Worcestershire | 28 | 18 | 3 | 6 | 1 | 0 | 5 | 191 | |
| 2 | Warwickshire | 28 | 14 | 5 | 9 | 0 | 0 | 5 | 150 | |
| 3 | Northamptonshire | 28 | 12 | 4 | 11 | 1 | 0 | 5 | 130 | |
| 4 | Surrey | 28 | 11 | 3 | 13 | 1 | 0 | 9 | 129 | |
| 5 | Yorkshire | 28 | 11 | 3 | 14 | 0 | 0 | 8 | 126 | |
| 6 | Middlesex | 28 | 9 | 6 | 12 | 1 | 2 | 9 | 112 | |
| 7 | Kent | 28 | 9 | 6 | 12 | 1 | 3 | 6 | 108 | |
| 8 | Somerset | 28 | 8 | 8 | 8 | 4 | 4 | 4 | 96 | |
| 9 | Sussex | 28 | 8 | 9 | 10 | 1 | 1 | 3 | 88 | |
| 10 | Essex | 28 | 7 | 11 | 8 | 2 | 5 | 3 | 86 | |
| 11 | Glamorgan | 28 | 7 | 7 | 12 | 2 | 1 | 6 | 84 | |
| =12 | Derbyshire | 28 | 5 | 9 | 12 | 2 | 4 | 5 | 68 | |
| =12 | Hampshire | 28 | 5 | 8 | 14 | 1 | 1 | 5 | 68 | |
| 14 | Lancashire | 28 | 4 | 10 | 13 | 1 | 4 | 8 | 64 | |
| 15 | Nottinghamshire | 28 | 4 | 13 | 11 | 0 | 3 | 4 | 54 | |
| 16 | Leicestershire | 28 | 3 | 18 | 5 | 2 | 7 | 0 | 44 | |
| 17 | Gloucestershire | 28 | 3 | 15 | 10 | 0 | 2 | 4 | 43 |
Notes: Surrey and Worcestershire one point each for tie on first innings in match drawn; Gloucestershire and Hampshire one point each for tie on first innings in match lost. Hampshire five points in drawn match when scores finished level and they were batting.