| 454-3 | Gloucestershire v Somerset | Seat Unique Stadium, Bristol | 2023 | a30134 |
| 429-9 | Nottinghamshire v Somerset | The Cooper Associates County Ground, Taunton | 2017 | a25663 |
| 415-8 | Northamptonshire v Somerset | County Ground, Northampton | 2023 | a30123 |
| 397-5 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2022 | a29399 |
| 383-7 | Kent v Somerset | County Ground, Taunton | 2014 | a23445 |
| 364-6 | Middlesex v Somerset | Brunton Memorial Ground, Radlett | 2019 | a27349 |
| 357-3 | Warwickshire v Somerset | Edgbaston, Birmingham | 1995 | a9307 |
| 356-9 | Hampshire v Somerset | The Ageas Bowl, Southampton | 2018 | a26479 |
| 352-6 | Kent v Somerset | The Cooper Associates County Ground, Taunton | 2017 | a25515 |
| 343-9 | Yorkshire v Somerset | County Ground, Taunton | 2005 | a16790 |
| 342-5 | Australians v Somerset | County Ground, Taunton | 2005 | a16671 |
| 342 | Durham v Somerset | The Cooper Associates County Ground, Taunton | 2022 | a29354 |
| 341-7 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 2009 | a19812 |
| 341-7 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2018 | a26420 |
| 339 | Kent v Somerset | County Ground, Taunton | 2002 | a14427 |
| 338-6 | Kent v Somerset | Mote Park, Maidstone | 1996 | a9805 |
| 337-5 | Middlesex v Somerset | John Walker's Ground, Southgate | 2003 | a15210 |
| 336-9 | Middlesex v Somerset | The Cooper Associates County Ground, Taunton | 2022 | a29376 |
| 335-6 | Hampshire v Somerset | County Ground, Taunton | 2003 | a15251 |
| 334-6 | Essex v Somerset | The Cooper Associates County Ground, Taunton | 2017 | a25580 |
| 331-3 | Durham v Somerset | County Ground, Taunton | 2015 | a24172 |
| 328-8 | Gloucestershire v Somerset | County Ground, Taunton | 2006 | a17414 |
| 327-6 | Leicestershire v Somerset | The Cooper Associates County Ground, Taunton | 2021 | a28515 |
| 324-4 | Leicestershire v Somerset | Grace Road, Leicester | 2013 | a22641 |
| 319-5 | Kent v Somerset | Recreation Ground, Bath | 2005 | a16668 |
| 319-6 | Sussex v Somerset | The Cooper Associates County Ground, Taunton | 2023 | a30130 |
| 313 | Essex v Somerset | The Cloudfm County Ground, Chelmsford | 2018 | a26434 |
| 311-7 | Durham v Somerset | County Ground, Taunton | 2014 | a23426 |
| 310-7 | Lancashire v Somerset | County Ground, Taunton | 2003 | a15287 |
| 307-4 | Yorkshire v Somerset | County Ground, Taunton | 2002 | a14289 |
| 305-6 | Northamptonshire v Somerset | County Ground, Northampton | 2021 | a28512 |
| 303-7 | Derbyshire v Somerset | County Ground, Taunton | 1990 | a6509 |
| 303-6 | Warwickshire v Somerset | Edgbaston, Birmingham | 1991 | a7005 |
| 302-8 | Sussex v Somerset | County Ground, Taunton | 1993 | a8118 |
| 302-9 | Surrey v Somerset | The Kia Oval, Kennington | 2022 | a29389 |
| 301-8 | Glamorgan v Somerset | The Cooper Associates County Ground, Taunton | 2023 | a30162 |
| 299-5 | Hampshire v Somerset | County Ground, Taunton | 1985 | a4544 |
| 299-6 | Northamptonshire v Somerset | County Ground, Taunton | 2002 | a14264 |
| 298-8 | Sussex v Somerset | County Ground, Taunton | 2005 | a16653 |
| 298-6 | Worcestershire v Somerset | County Ground, Taunton | 2008 | a19140 |
| 298 | Derbyshire v Somerset | The Cooper Associates County Ground, Taunton | 2021 | a28467 |
| 296-6 | Surrey v Somerset | The Foster's Oval, Kennington | 1998 | a11167 |
| 296-7 | Nottinghamshire v Somerset | County Ground, Taunton | 2002 | a14473 |
| 296-4 | Scotland v Somerset | County Ground, Taunton | 2003 | a15169 |
| 296-9 | Middlesex v Somerset | The Cooper Associates County Ground, Taunton | 2016 | a24838 |
| 295-6 | Surrey v Somerset | The Kia Oval, Kennington | 2012 | a21958 |
| 294-7 | Gloucestershire v Somerset | County Ground, Taunton | 1982 | a3319 |
| 294-6 | Gloucestershire v Somerset | County Ground, Bristol | 2008 | a18983 |
| 293-6 | Kent v Somerset | County Ground, Taunton | 1985 | a4408 |
| 293-5 | Essex v Somerset | County Ground, Taunton | 1989 | a6089 |
| 292-5 | Warwickshire v Somerset | County Ground, Taunton | 1978 | a2215 |
| 291-8 | Sussex v Somerset | County Ground, Taunton | 2010 | a20578 |
| 290-8 | Surrey v Somerset | The Cooper Associates County Ground, Taunton | 2017 | a25487 |
| 289-6 | Glamorgan v Somerset | County Ground, Taunton | 2014 | a23482 |
| 289 | Glamorgan v Somerset | The Cooper Associates County Ground, Taunton | 2018 | a26415 |
| 289-9 | Surrey v Somerset | The Cooper Associates County Ground, Taunton | 2019 | a27373 |
| 289-7 | Warwickshire v Somerset | Edgbaston, Birmingham | 2021 | a28525 |
| 288-5 | Hampshire v Somerset | Clarence Park, Weston-super-Mare | 1975 | a1498 |
| 288-3 | Surrey v Somerset | The Foster's Oval, Kennington | 1994 | a8608 |
| 288-4 | Sussex v Somerset | County Ground, Taunton | 2009 | a19831 |
| 287 | Essex v Somerset | County Ground, Taunton | 1978 | a2270 |
| 287-5 | Sussex v Somerset | County Ground, Taunton | 2007 | a18205 |
| 286-5 | Sussex v Somerset | County Ground, Taunton | 2003 | a15197 |
| 286-8 | Glamorgan v Somerset | County Ground, Taunton | 2007 | a18192 |
| 286-4 | Hampshire v Somerset | The Rose Bowl, Southampton | 2008 | a18964 |
| 285-9 | Zimbabweans v Somerset | County Ground, Taunton | 2003 | a15173 |
| 284-3 | Worcestershire v Somerset | County Ground, Taunton | 1990 | a6642 |
| 284-9 | Yorkshire v Somerset | County Ground, Taunton | 2004 | a15884 |
| 284-3 | Yorkshire v Somerset | County Ground, Taunton | 2006 | a17564 |
| 284-9 | Surrey v Somerset | The Kia Oval, Kennington | 2014 | a23501 |
| 284-4 | Warwickshire v Somerset | Edgbaston, Birmingham | 2016 | a24887 |
| 283-9 | Yorkshire v Somerset | North Marine Road, Scarborough | 2002 | a14408 |
| 282-6 | Middlesex v Somerset | County Ground, Taunton | 1980 | a2638 |
| 282-5 | Warwickshire v Somerset | Edgbaston, Birmingham | 1984 | a4066 |
| 281-3 | Derbyshire v Somerset | County Ground, Derby | 1993 | a8177 |
| 281-6 | Surrey v Somerset | County Ground, Taunton | 2003 | a15138 |
| 281 | Sri Lankans v Somerset | County Ground, Taunton | 2006 | a17482 |
| 280-6 | Kent v Somerset | St Lawrence Ground, Canterbury | 1995 | a9195 |
| 279-5 | Sussex v Somerset | County Ground, Taunton | 1984 | a4013 |
| 279-6 | Nottinghamshire v Somerset | Trent Bridge, Nottingham | 1993 | a8033 |
| 279-5 | Nottinghamshire v Somerset | Trent Bridge, Nottingham | 2003 | a15296 |
| 279 | Glamorgan v Somerset | The Cooper Associates County Ground, Taunton | 2016 | a24832 |
| 278-5 | Essex v Somerset | County Ground, Chelmsford | 1981 | a2936 |
| 278-4 | Durham v Somerset | County Ground, Taunton | 2004 | a15957 |
| 278-5 | Warwickshire v Somerset | County Ground, Taunton | 2005 | a16834 |
| 278-3 | Derbyshire v Somerset | County Ground, Derby | 2006 | a17598 |
| 277-5 | Derbyshire v Somerset | County Ground, Derby | 2005 | a16773 |
| 276 | Derbyshire v Somerset | County Ground, Derby | 2004 | a15869 |
| 275-5 | Kent v Somerset | County Ground, Taunton | 1984 | a4157 |
| 274-9 | Sussex v Somerset | County Ground, Taunton | 2004 | a16029 |
| 271 | British Universities v Somerset | County Ground, Taunton | 1996 | a9837 |
| 271-6 | Suffolk v Somerset | County Ground, Taunton | 1996 | a9923 |
| 271 | Worcestershire v Somerset | County Ground, Taunton | 2002 | a14411 |
| 271-9 | Warwickshire v Somerset | Edgbaston, Birmingham | 2009 | a19754 |
| 270-8 | Leicestershire v Somerset | Grace Road, Leicester | 1974 | a1198 |
| 270 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 1987 | a5243 |
| 270-5 | Warwickshire v Somerset | Clarence Park, Weston-super-Mare | 1990 | a6687 |
| 270-2 | Essex v Somerset | County Ground, Chelmsford | 1997 | a10486 |
| 270-7 | Gloucestershire v Somerset | The Royal and Sun Alliance County Ground, Bristol | 2002 | a14271 |
| 270-2 | Worcestershire v Somerset | County Ground, Taunton | 2002 | a14396 |
| 269-6 | Glamorgan v Somerset | County Ground, Taunton | 2001 | a13597 |
| 269 | Leicestershire v Somerset | Uptonsteel County Ground, Leicester | 2022 | a29363 |
| 268-2 | Lancashire v Somerset | County Ground, Taunton | 1995 | a9356 |
| 268-6 | Worcestershire v Somerset | County Ground, Taunton | 2006 | a17583 |
| 268 | Durham v Somerset | Riverside Ground, Chester-le-Street | 2008 | a19077 |
| 267-6 | Leicestershire v Somerset | County Ground, Taunton | 2000 | a12922 |
| 267 | Surrey v Somerset | County Ground, Taunton | 2015 | a24224 |
| 266-3 | Sussex v Somerset | County Ground, Hove | 2005 | a16769 |
| 265 | Nottinghamshire v Somerset | County Ground, Taunton | 2003 | a15115 |
| 264-3 | Derbyshire v Somerset | County Ground, Taunton | 1990 | a6559 |
| 264-5 | Kent v Somerset | County Ground, Taunton | 1999 | a12057 |
| 264 | Pakistanis v Somerset | County Ground, Taunton | 2010 | a20751 |
| 263-4 | Durham v Somerset | County Ground, Taunton | 1992 | a7654 |
| 263-7 | Northamptonshire v Somerset | Wardown Park, Luton | 1993 | a8111 |
| 263 | Sussex v Somerset | County Ground, Hove | 1996 | a9956 |
| 263-6 | Warwickshire v Somerset | Edgbaston, Birmingham | 2002 | a14247 |
| 263-7 | Leicestershire v Somerset | Recreation Ground, Bath | 2004 | a15935 |
| 263-8 | Gloucestershire v Somerset | County Ground, Taunton | 2013 | a22755 |
| 262-6 | Leicestershire v Somerset | Agricultural Showgrounds, Frome | 1970 | a362 |
| 262-4 | Worcestershire v Somerset | County Ground, New Road, Worcester | 1997 | a10547 |
| 262-9 | Leicestershire v Somerset | County Ground, Taunton | 2001 | a13648 |
| 262-5 | Hampshire v Somerset | County Ground, Taunton | 2002 | a14360 |
| 261-5 | Kent v Somerset | Devonshire Park Ground, Weston-super-Mare | 1970 | a411 |
| 261-5 | Warwickshire v Somerset | County Ground, Taunton | 1982 | a3421 |
| 261-3 | Yorkshire v Somerset | County Ground, Taunton | 1997 | a10533 |
| 261-5 | Yorkshire v Somerset | North Marine Road, Scarborough | 2007 | a18312 |
| 261-8 | Yorkshire v Somerset | County Ground, Taunton | 2013 | a22778 |
| 261-8 | Nottinghamshire v Somerset | Trent Bridge, Nottingham | 2014 | a23434 |
| 261 | Derbyshire v Somerset | The Incora County Ground, Derby | 2023 | a30167 |
| 260 | Glamorgan v Somerset | Sophia Gardens, Cardiff | 1978 | a2237 |
| 260-7 | Warwickshire v Somerset | Edgbaston, Birmingham | 1995 | a9257 |
| 260 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 1997 | a10505 |
| 260-3 | Sussex v Somerset | County Ground, Taunton | 1999 | a12091 |
| 260-4 | Yorkshire v Somerset | Lord's Cricket Ground, St John's Wood | 2002 | a14513 |
| 260 | Gloucestershire v Somerset | The Cooper Associates County Ground, Taunton | 2016 | a24744 |
| 259-7 | Nottinghamshire v Somerset | County Ground, Taunton | 2004 | a16126 |
| 259-7 | Gloucestershire v Somerset | County Ground, Bristol | 2007 | a18231 |
| 259-5 | Kent v Somerset | The Kent County Cricket Ground, Beckenham | 2008 | a19029 |
| 259 | Glamorgan v Somerset | Sophia Gardens, Cardiff | 2019 | a27295 |
| 258-7 | Gloucestershire v Somerset | Ashley Down Ground, Bristol | 1973 | a870 |
| 258-7 | Surrey v Somerset | The Foster's Oval, Kennington | 1989 | a6132 |
| 258 | Durham v Somerset | County Ground, Taunton | 2007 | a18345 |
| 257-4 | Nottinghamshire v Somerset | Trent Bridge, Nottingham | 1995 | a9314 |
| 256-5 | Yorkshire v Somerset | Acklam Park, Middlesbrough | 1992 | a7592 |
| 256-9 | Nottinghamshire v Somerset | Trent Bridge, Nottingham | 1998 | a11285 |
| 255-5 | Lancashire v Somerset | Old Trafford, Manchester | 1970 | a376 |
| 255 | Gloucestershire v Somerset | Imperial Athletic Ground, Bristol | 1975 | a1369 |
| 255-4 | Yorkshire v Somerset | North Marine Road, Scarborough | 2004 | a16016 |
| 255-9 | Worcestershire v Somerset | County Ground, New Road, Worcester | 2010 | a20745 |
| 255-7 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 2014 | a23463 |
| 254-8 | Hampshire v Somerset | County Ground, Taunton | 1974 | a1139 |
| 254-7 | Surrey v Somerset | County Ground, Taunton | 1974 | a1255 |
| 254-7 | Worcestershire v Somerset | County Ground, New Road, Worcester | 2002 | a14298 |
| 253-4 | Essex v Somerset | County Ground, Chelmsford | 1986 | a4936 |
| 253-2 | Essex v Somerset | County Ground, Taunton | 1996 | a9858 |
| 253 | Surrey v Somerset | The Brit Oval, Kennington | 2006 | a17427 |
| 253-9 | Surrey v Somerset | The Brit Oval, Kennington | 2007 | a18383 |
| 252-7 | Gloucestershire v Somerset | County Ground, Taunton | 1972 | a710 |
| 252-8 | Warwickshire v Somerset | County Ground, Taunton | 1993 | a8173 |
| 252-7 | Nottinghamshire v Somerset | County Ground, Taunton | 2001 | a13592 |
| 252-9 | Scotland v Somerset | County Ground, Taunton | 2009 | a19792 |
| 252-9 | Middlesex v Somerset | County Ground, Taunton | 2013 | a22632 |
| 252 | Warwickshire v Somerset | Edgbaston, Birmingham | 2022 | a29418 |
| 251-9 | Gloucestershire v Somerset | Ashley Down Ground, Bristol | 1974 | a1149 |
| 251-8 | Northamptonshire v Somerset | County Ground, Northampton | 2000 | a12778 |
| 251-9 | Kent v Somerset | St Lawrence Ground, Canterbury | 2009 | a19809 |
| 251 | Worcestershire v Somerset | The Cooper Associates County Ground, Taunton | 2023 | a30117 |
| 250-9 | Kent v Somerset | St Lawrence Ground, Canterbury | 1995 | a9276 |
| 250-4 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 2004 | a15919 |
| 250-9 | Glamorgan v Somerset | County Ground, Taunton | 2012 | a22066 |
| 250-6 | Middlesex v Somerset | Lord's Cricket Ground, St John's Wood | 2013 | a22666 |
| 250-6 | Hampshire v Somerset | The Cooper Associates County Ground, Taunton | 2017 | a25563 |
