Someone on the KUMB forum produced this table showing stadium capacities - this year's average attendance and that average as a percentage of the capacity (the percentage of tickets sold).
The figures come from an ESPN table of this season's average attendances, that has West Ham eleventh with an average attendance of 34,601. I prefer this table, not only because we come higher :), but because it is probably a better indication of how well a club is supported.
For example, even though Everton average 300 more fans than us a game - they have a far higher capacity and only sell 87% of their tickets. Considering the season they have had that it a shocking lack of support.
Compare that to Derby, whose fans have only had one victory all season, but who sold nearly 10% more of their capacity than Everton.
1. Man Utd-------------------------76312----------75961-----------99.54%
2 Arsenal---------------------------60432---------60070-----------99.4%
3 T*ttenham-----------------------36240---------35967-----------99.25%
4 Portsmouth----------------------20224---------19914-----------98.47%
5 West Ham Utd-------------------35146---------34601-----------98.45%
6 Chelsea--------------------------42055---------41397-----------98.44%
7 Newcastle------------------------52387---------51321-----------97.97%
8 Reading--------------------------24161---------23532-----------97.4%
9 Fulham--------------------------24600---------23774-----------96.64%
10 Derby County------------------33597---------32432-----------96.53%
11 Liverpool-----------------------45362---------43532-----------95.97%
12 Aston Villa---------------------42640---------40372-----------94.68%
13 Sunderland--------------------49000---------43344-----------88.46%
14 Manchester City---------------47726---------42126-----------88.26%
15 Birmingham--------------------30016---------26181-----------87.22%
16 Everton------------------------40170---------34985-----------87.09%
17 Blackburn----------------------31367---------23916-----------76.25%
18 Middlesbrough-----------------35100---------26708-----------76.09%
19 Wigan Athletic-----------------25138---------19046-----------75.77%
20 Bolton-------------------------27879---------20901-----------74.97%