| Runs |
Out of |
4s |
6s |
| 136 | 152* | 10 | 16 | | GR Napier | Essex v Sussex | The Ford County Ground, Chelmsford | 2008 |
| 110 | 139* | 11 | 11 | | JM Cox | Essex v Hampshire | Ambassador Cruise Line Ground, Chelmsford | 2025 |
| 112 | 129 | 7 | 14 | | CS Delport | Essex v Surrey | The Cloudfm County Ground, Chelmsford | 2019 |
| 90 | 120* | 9 | 9 | | MS Pepper | Essex v Sussex | The 1st Central County Ground, Hove | 2024 |
| 78 | 109* | 12 | 5 | | T Westley | Essex v Sussex | The Essex County Ground, Chelmsford | 2014 |
| 78 | 98 | 9 | 7 | | RN ten Doeschate | Essex v Kent | The Ford County Ground, Chelmsford | 2010 |
| 76 | 105 | 10 | 6 | | T Westley | Essex v Kent | Castle Park Cricket Ground, Colchester | 2014 |
| 80 | 107* | 8 | 8 | | JD Ryder | Essex v Hampshire | The Essex County Ground, Chelmsford | 2015 |
| 76 | 101 | 10 | 6 | | MS Pepper | Essex v Middlesex | The Cloud County Ground, Chelmsford | 2024 |
| 68 | 87* | 14 | 2 | | MS Pepper | Essex v Sussex | Ambassador Cruise Line Ground, Chelmsford | 2025 |
| 64 | 100* | 13 | 2 | | RC Irani | Essex v Sussex | County Ground, Hove | 2006 |
| 68 | 100* | 11 | 4 | | AN Cook | Essex v Surrey | The Brit Oval, Kennington | 2009 |
| 62 | 95* | 14 | 1 | | ML Pettini | Essex v Middlesex | Lord's Cricket Ground, St John's Wood | 2014 |
| 78 | 116 | 6 | 9 | | V Chopra | Essex v Kent | The Cloudfm County Ground, Chelmsford | 2017 |
| 70 | 95 | 10 | 5 | | AM Rossington | Essex v Sussex | The 1st Central County Ground, Hove | 2022 |
| 64 | 87 | 10 | 4 | | ML Pettini | Essex v Surrey | The Brit Oval, Kennington | 2009 |
| 72 | 106* | 6 | 8 | | SB Styris | Essex v Surrey | The Ford County Ground, Chelmsford | 2010 |
| 64 | 94* | 10 | 4 | | RS Bopara | Essex v Hampshire | The Rose Bowl, Southampton | 2010 |
| 68 | 105* | 8 | 6 | | RS Bopara | Essex v Somerset | The Ford County Ground, Chelmsford | 2010 |
| 66 | 84 | 9 | 5 | | HD Rutherford | Essex v Sussex | The Brighton and Hove Jobs County Ground, Hove | 2013 |
| 72 | 103* | 6 | 8 | | V Chopra | Essex v Glamorgan | The Cloudfm County Ground, Chelmsford | 2017 |
| 54 | 83 | 12 | 1 | | A Flower | Essex v Middlesex | County Ground, Chelmsford | 2003 |
| 60 | 81* | 9 | 4 | | RC Irani | Essex v Hampshire | The Ford County Ground, Chelmsford | 2006 |
| 60 | 75* | 9 | 4 | | MS Pepper | Essex v Hampshire | The Cloud County Ground, Chelmsford | 2022 |
| 58 | 86* | 10 | 3 | | MS Pepper | Essex v Somerset | The Cloud County Ground, Chelmsford | 2022 |
| 56 | 69 | 11 | 2 | | RJ Das | Essex v Gloucestershire | The Cloud County Ground, Chelmsford | 2023 |
| 56 | 72 | 11 | 2 | | RJ Das | Essex v Somerset | The Cloud County Ground, Chelmsford | 2023 |
| 52 | 83 | 10 | 2 | | RS Bopara | Essex v Surrey | The Brit Oval, Kennington | 2006 |
| 62 | 102 | 5 | 7 | | RN ten Doeschate | Essex v Middlesex | Lord's Cricket Ground, St John's Wood | 2010 |
| 56 | 75 | 8 | 4 | | JD Ryder | Essex v Sussex | The Essex County Ground, Chelmsford | 2014 |
| 54 | 74 | 9 | 3 | | ML Pettini | Essex v Hampshire | The Essex County Ground, Chelmsford | 2015 |
| 60 | 81 | 6 | 6 | | DW Lawrence | Essex v Sussex | The 1st Central County Ground, Hove | 2020 |
| 54 | 76 | 9 | 3 | | PI Walter | Essex v Sussex | The Cloudfm County Ground, Chelmsford | 2020 |
| 60 | 71 | 6 | 6 | | DR Sams | Essex v Sussex | The Cloud County Ground, Chelmsford | 2022 |
| 60 | 78 | 6 | 6 | | PI Walter | Essex v Glamorgan | Sophia Gardens, Cardiff | 2023 |
| 56 | 70 | 8 | 4 | | DW Lawrence | Essex v Hampshire | The Ageas Bowl, Southampton | 2023 |
| 60 | 69* | 6 | 6 | | DR Sams | Essex v Middlesex | The Cloud County Ground, Chelmsford | 2023 |
| 56 | 76 | 8 | 4 | | MS Pepper | Essex v Kent | Spitfire Ground, St Lawrence, Canterbury | 2024 |
| 60 | 82 | 6 | 6 | | JM Cox | Essex v Sussex | The 1st Central County Ground, Hove | 2025 |
