Using attendance "records" (some seem to be estimates) from the past season from http://www.worldfootball.net.
Top 20 Average Home Attendance:
- Borussia Dortmund (Bundesliga) 80,297
- Manchester United (Premier League) 75,207
- FC Barcelona (La Liga) 71,958
- Bayern München (Bundesliga) 71,000
- Real Madrid (La Liga) 70,754
- FC Schalke 04 (Bundesliga) 61,569
- Arsenal FC (Premier League) 59,487
- Bor. Mönchengladbach (Bundesliga) 52,239
- Hertha BSC (Bundesliga) 51,889
- Hamburger SV (Bundesliga) 51,825
- VfB Stuttgart (Bundesliga) 50,498
- Newcastle United (Premier League) 50,395
- Manchester City (Premier League) 47,080
- Eintracht Frankfurt (Bundesliga) 47,053
- Atlético Madrid (La Liga) 46,746
- Inter (Serie A) 46,246
- Hannover 96 (Bundesliga) 45,635
- Paris Saint-Germain (Ligue 1) 45,420
- Liverpool FC (Premier League) 44,671
- Seattle Sounders FC (MLS) 43,734
Top Leagues Average Home Attendance:
Canadian/US American Major League Soccer 2014
1 Seattle Sounders 43,734
2 Toronto FC 22,086
3 Los Angeles Galaxy 21,227
4 Portland Timbers 20,768
5 Vancouver Whitecaps 20,408
Argentine Primera División 2013/2014 (combining Torneo Inicial and Torneo Final)
1 River Plate 42,368
2 Rosario Central 38,368
3 Boca Juniors 37,895
4 Newell's Old Boys 37,158
5 Belgrano Córdoba 26,526
Brazilian Série A 2013
1 Cruzeiro EC 29,315
2 Flamengo RJ 26,350
3 Corinthians SP 25,168
4 São Paulo FC 23,024
5 Grêmio Porto Alegre 22,301
Mexican "Liga MX" Primera División 2013/2014 (combining Apertura and Clausura)
1 CF América 41,259
2 UANL Tigres 41,036
3 CF Monterrey 30,318
4 Deportivo Guadalajara 25,446
5 Atlas Guadalajara 22,852
English Premier League 2013/2014
1 Manchester United 75,207
2 Arsenal FC 59,487
3 Newcastle United 50,395
4 Manchester City 47,080
5 Liverpool FC 44,671
6 Chelsea FC 41,482
7 Sunderland AFC 41,090
8 Everton FC 37,732
9 Aston Villa 36,081
10 Tottenham Hotspur 35,808
German Bundesliga 2013/2014
1 Borussia Dortmund 80,297
2 Bayern München 71,000
3 FC Schalke 04 61,569
4 Bor. Mönchengladbach 52,239
5 Hertha BSC 51,889
6 Hamburger SV 51,825
7 VfB Stuttgart 50,498
8 Eintracht Frankfurt 47,053
9 Hannover 96 45,635
10 Werder Bremen 40,657
French Ligue 1 2013/2014
1 Paris Saint-Germain 45,420
2 Lille OSC 38,662
3 Olympique Marseille 38,129
4 Olympique Lyon 34,414
5 AS Saint-Étienne 30,390
6 FC Nantes 28,116
7 OGC Nice 22,913
8 Stade Rennes 19,524
9 Girondins Bordeaux 18,833
10 Stade Reims 15,558
Italian Serie A 2013/2014
1 Inter 46,246
2 SSC Napoli 40,918
3 AS Roma 40,083
4 AC Milan 40,061
5 Juventus 37,318
6 ACF Fiorentina 33,098
7 Lazio Roma 29,548
8 Sampdoria 22,102
9 Hellas Verona 21,206
10 Bologna FC 21,145
Spanish La Liga Primera División 2013/2014
1 FC Barcelona 71,958
2 Real Madrid 70,754
3 Atlético Madrid 46,746
4 Valencia CF 36,903
5 Athletic Bilbao 33,383
6 Real Betis 30,652
7 Sevilla FC 30,545
8 Elche CF 25,320
9 Real Sociedad 23,204
10 Málaga CF 21,551
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