| Inns | HS |
| 187-9 | 39 | Northamptonshire v Worcestershire | County Ground, Northampton | 2018 |
| 181-8 | 44* | Northamptonshire v Worcestershire | County Ground, Northampton | 2023 |
| 180 | 36 | Northamptonshire v Derbyshire | County Ground, Northampton | 2018 |
| 180-6 | 47* | Northamptonshire v Yorkshire | Headingley, Leeds | 2023 |
| 176-6 | 45 | Northamptonshire v Warwickshire | County Ground, Northampton | 2009 |
| 169-5 | 47 | Northamptonshire v Lancashire | County Ground, Northampton | 2015 |
| 169-9 | 40* | Northamptonshire v Lancashire | County Ground, Northampton | 2023 |
| 169-4 | 44* | Northamptonshire v Worcestershire | County Ground, Northampton | 2024 |
| 167-9 | 44 | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2006 |
| 165-7 | 43 | Northamptonshire v Yorkshire | Headingley, Leeds | 2014 |
| 165-8 | 41 | Northamptonshire v Leicestershire | Fischer County Ground, Grace Road, Leicester | 2017 |
| 164-6 | 43 | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2005 |
| 162-7 | 48* | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2007 |
| 162-5 | 43* | Northamptonshire v Gloucestershire | County Ground, Bristol | 2008 |
| 162 | 48 | Northamptonshire v Gloucestershire | County Ground, Bristol | 2009 |
| 162-9 | 40 | Northamptonshire v Durham | County Ground, Northampton | 2018 |
| 161 | 38* | Northamptonshire v Warwickshire | County Ground, Northampton | 2006 |
| 161-6 | 36* | Northamptonshire v Glamorgan | Edgbaston, Birmingham | 2020 |
| 160-5 | 48 | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2017 |
| 160-3 | 47 | Northamptonshire v Worcestershire | County Ground, Northampton | 2017 |
| 159-4 | 39 | Northamptonshire v Derbyshire | County Ground, Derby | 2010 |
| 158-7 | 35 | Northamptonshire v Warwickshire | County Ground, Northampton | 2020 |
| 157-7 | 40 | Northamptonshire v Lancashire | County Ground, Northampton | 2019 |
| 157-8 | 37 | Northamptonshire v Yorkshire | County Ground, Northampton | 2024 |
| 156-4 | 46 | Northamptonshire v Yorkshire | County Ground, Northampton | 2015 |
| 156-8 | 47 | Northamptonshire v Derbyshire | County Ground, Northampton | 2023 |
| 155-6 | 48 | Northamptonshire v Derbyshire | Queen's Park, Chesterfield | 2015 |
| 154-8 | 35 | Northamptonshire v Somerset | County Ground, Northampton | 2005 |
| 154-6 | 37 | Northamptonshire v Leicestershire | Fischer County Ground, Grace Road, Leicester | 2018 |
| 153-7 | 39 | Northamptonshire v Warwickshire | County Ground, Northampton | 2012 |
| 153-6 | 44* | Northamptonshire v Lancashire | Edgbaston, Birmingham | 2015 |
| 153-6 | 44 | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2019 |
| 153-9 | 36 | Northamptonshire v Worcestershire | County Ground, Northampton | 2021 |
| 152-7 | 47 | Northamptonshire v Somerset | County Ground, Taunton | 2013 |
| 152-8 | 36 | Northamptonshire v Nottinghamshire | Trent Bridge, Nottingham | 2019 |
| 152-4 | 37* | Northamptonshire v Derbyshire | The Incora County Ground, Derby | 2023 |
| 151-7 | 38 | Northamptonshire v Yorkshire | Headingley, Leeds | 2010 |
| 150-8 | 35 | Northamptonshire v Warwickshire | Edgbaston, Birmingham | 2011 |
| 150-6 | 32 | Northamptonshire v Gloucestershire | County Ground, Northampton | 2020 |
