| Year formed | 1895 |
| Turned professional | 1900 |
| Limited company | 1900 |
| Previous names | Thames Ironworks: 1895 - 1900 West Ham United: 1900 to date |
Ground | London Stadium, Queen Elizabeth Olympic Park, London E20 2ST (for pictures of the ground click here) |
| Pitch measurements | 115 x 74 yards (105 x 68 metres) |
| Ground capacity | 60,000 |
| Record attendance at present ground | 59,988 v Everton, Premier League, 30 March 2019 (lost 0-2) |
| League career | Southern League Division Two (London section): 1898 - 1899 Southern League Division One: 1899 - 1915 Western League: 1901 - 1909 Division Two: 1919 - 1923 Division One: 1923 - 1932 Division Two: 1932 - 1958 Division One: 1958 - 1978 Division Two: 1978 - 1981 Division One: 1981 - 1989 Division Two: 1989 - 1991 Division One: 1991 - 1992 Division One: 1992 - 1993 Premiership: 1993 - 2003 Division One/Championship: 2003 - 2005 Premiership: 2005 - 2011 Championship: 2011 - 2012 Premier League: 2012 - . |
| First Football League game | 30th August 1919 v Lincoln City, Division Two, drew 1-1 |
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| Honours | |
| European | UEFA Europa Conference League winners: 2022-23 European Cup-Winners' Cup winners: 1964-65 European Cup-Winners' Cup runners-up: 1975-76 |
| Domestic - League | Division Two champions: 1957-58, 1980-81 Division Two/One runners-up: 1922-23, 1990-91, 1992-93 Southern League Division Two champions: 1898-99 Western League Division 1B champions: 1906-07 Second World War Division South 'A' runners-up: 1939-40 Second World War Division South 'C' runners-up: 1939-40 Second World War Division South runners-up: 1940-41 Second World War Division South runners-up: 1943-44, 1944-45 |
| Domestic - Cup | FA Cup winners: 1963-64, 1974-75, 1979-80 FA Cup runners-up: 1922-23, 2005-06 League Cup runners-up: 1965-66, 1980-81 Charity Shield joint holders: 1964-65 Charity Shield runners-up: 1975-76, 1980-81 FA Youth Cup winners: 1962-63, 1980-81, 1998-99, 2022-23 FA Youth Cup runners-up: 1956-57, 1958-59, 1974-75, 1995-96 Southern Professional Floodlit Cup winners: 1955-56 Southern Professional Floodlit Cup runners-up: 1959-60 Second World War League War Cup winners: 1939-40 |
| Best League position | 3rd, Division One, 1985-86 |
| Lowest League position | 20th, Division Two, 1932-33 |
| Furthest in FA Cup | see above |
| Furthest in League Cup | see above |
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| Most League points | |
| 2 for a win | 66, Division Two, 1980-81 |
| 3 for a win | 88, Division One, 1992-93 |
| Fewest League points | |
| 2 for a win | 31, Division One, 1931-32 |
| 3 for a win | 33, Premier League, 2010-11 |
| Most League goals scored | 101, Division Two, 1957-58 |
| Most League goals conceded | 107, Division One, 1931-32 |
| Fewest League goals scored | 35, Premiership, 2006-07 |
| Fewest League goals conceded | 29, Division Two, 1980-81 |
| Most wins in a League season | 28, Division Two, 1980-81 |
| Fewest wins in a League season | 7, Premier League, 2010-11 |
| Most draws in a League season | 18, Division One, 1968-69 |
| Fewest draws in a League season | 4, Division One, 1964-65, 1982-83 4, Division Two, 1934-35 |
| Most losses in a League season | 23, Division One, 1931-32 |
| Fewest losses in a League season | 4, Division One, 1980-81 |
| Record League win | 8-0 v Rotherham United, Division Two, 8 March 1958 8-0 v Sunderland, Division One, 19 October 1968 |
| Record Cup win | 10-0 v Bury, Milk Cup 2nd round 2nd leg, 25 October 1983 |
| Record League Cup win | 10-0 v Bury, Milk Cup 2nd round 2nd leg, 25 October 1983 |
| Record defeat | 2-8 v Blackburn Rovers, Division One, 26 December 1963 |
| Record League Cup defeat | 0-6 v Oldham Athletic, Littlewoods Challenge Cup semi-final 1st leg, 14 February 1990 0-6 v Manchester City, Capital One Cup semi-final 1st leg, 8 January 2014 |
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| Highest number of League goals scored | |
| in a season | 42, Vic Watson, Division One, 1929-30 |
| in total | 298, Vic Watson, 1920-35 |
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| Most League goals scored in one match | 6, Vic Watson v Leeds United, Division One, 9th February 1929 6, Geoff Hurst v Sunderland, Division One, 19th October 1968 |
| Most League appearances | 663, Billy Bonds, 1967-88 |
Most capped player | 108, Bobby Moore for England |
| Youngest League player | Billy Williams, 16 years 221 days v Blackpool, 6th May 1922 |
| Highest transfer fee received | £100,000,000 (plus £5,000,000 in add-ons) for Declan Rice to Arsenal, July 2023 |
| Highest transfer fee paid | £45,000,000 for Sebastien Heller from Eintracht Frankfurt, July 2019 |
