| Year formed | 1906 |
| Turned professional | 1906 |
| Limited company | 1919 |
| Previous names | None |
Ground | Roots Hall Stadium, Victoria Avenue, Southend-on-Sea, Essex SS2 6NQ (for pictures of the ground click here) |
| Pitch measurements | 110 x 74 yards (101 x 69 metres) |
| Ground capacity | 12,392 |
| Record attendance at present ground | 31,090 v Liverpool, FA Cup 3rd round, 10th January 1979 (drew 0-0) |
| League career | Southern League Division Two: 1906 - 1908 Southern League Division One: 1908 - 1911 Southern League Division Two: 1911 - 1913 Southern League Division One: 1913 - 1920 Division Three: 1920 - 1921 Division Three (South): 1921 - 1958 Division Three: 1958 - 1966 Division Four: 1966 - 1972 Division Three: 1972 - 1976 Division Four: 1976 - 1978 Division Three: 1978 - 1980 Division Four: 1980 - 1981 Division Three: 1981 - 1984 Division Four: 1984 - 1987 Division Three: 1987 - 1989 Division Four: 1989 - 1990 Division Three: 1990 - 1991 Division Two/One: 1991 - 1997 Division Two: 1997 - 1998 Division Three/League Two: 1998 - 2005 League One: 2005 - 2006 Championship: 2006 - 2007 League One: 2007 - 2010 League Two: 2010 - 2015 League One: 2015 - 2020 League Two: 2020 - 2021 National League: 2021 - . |
| First Football League game | 28th August 1920 v Brighton & Hove Albion, Division Three, won 2-0 |
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| Honours | |
| European | None |
| Domestic - League | League One champions: 2005-06 Division Three runners-up: 1990-91 Division Four champions: 1980-81 Division Four runners-up: 1971-72, 1977-78 Southern League Division Two champions: 1906-07, 1907-08 Southern League Division Two runners-up: 1912-13 |
| Domestic - Cup | LDV Vans Trophy / Johnstone's Paint Trophy runners-up: 2003-04, 2004-05, 2012-13 |
| Best League position | 12th, Division Two, 1991-92 14th, Division One, 1995-96 |
| Lowest League position | 23rd, League Two, 2020-21 |
| Furthest in FA Cup | old 3rd round, 1920-21 and 5th round, 1925-26, 1951-52, 1975-76, 1992-93 |
| Furthest in League Cup | Quarter-final, 2006-07 |
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| Most League points | |
| 2 for a win | 67, Division Four, 1980-81 |
| 3 for a win | 85, Division Three, 1990-91 |
| Fewest League points | |
| 2 for a win | 27, Division Three (South), 1921-22 |
| 3 for a win | 19, League One, 2019-20 |
| Most League goals scored | 92, Division Three (South), 1950-51 |
| Most League goals conceded | 86, Division One, 1996-97 |
| Fewest League goals scored | 29, League Two, 2020-21 |
| Fewest League goals conceded | 31, Division Four, 1980-81 |
| Most wins in a League season | 30, Division Four, 1980-81 |
| Fewest wins in a League season | 4, League One, 2019-20 |
| Most draws in a League season | 19, Division Four, 1976-77 |
| Fewest draws in a League season | 3, Division Three, 2002-03 |
| Most losses in a League season | 26, Division Three, 1965-66 26, Division Three, 2002-03 |
| Fewest losses in a League season | 9, Division Four, 1980-81 |
| Record League win | 9-2 v Newport County, Division Three (South), 5 September 1936 |
| Record Cup win | 10-1 v Golders Green, FA Cup 1st round, 24 November 1934 10-1 v Brentwood, FA Cup 2nd round, 7 December 1968 10-1 v Aldershot, Leyland DAF Cup preliminary round, 6 November 1990 |
| Record League Cup win | 6-1 v Bournemouth & Boscombe Athletic, League Cup 1st round, 13 August 1968 |
| Record defeat | 1-9 v Brighton & Hove Albion, Division Three, 27 November 1965 |
| Record League Cup defeat | 0-8 v Crystal Palace, Rumbelows Cup 2nd round 1st leg, 25 September 1990 |
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| Highest number of League goals scored | |
| in a season | 31, Jim Shankly, Division Three (South), 1928-29 31, Sammy McCrory, Division Three (South), 1957-58 |
| in total | 122, Roy Hollis, 1953-60 |
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| Most League goals scored in one match | 5, Jim Shankly v Merthyr Town, Division Three (South), 1st March 1903 |
| Most League appearances | 452, Sandy Anderson, 1950-63 |
Most capped player | 9, George Mackenzie for Republic of Ireland |
| Youngest League player | 16 years 76 days, Phil O'Connor v Lincoln City, 26th December 1969 |
| Highest transfer fee received | £4,200,000 for Stan Collymore to Nottingham Forest, June 1993 |
| Highest transfer fee paid | £750,000 for Stan Collymore from Crystal Palace, November 1992 |
