Top 50 leagues by kb 19/3/04 :
145123        South Australian Amateur FL
138376        Victorian Football League / VFL / Victorian FA
101679        Eastern Football League
74000        South Australian National FL / SANFL / SAFL
73891        Diamond Valley FL
71368        Southern FL
70183        East Suburban Churches FA
66987        Northern Territory FL
66283        Wimmera FL
65079        Alberton FL
63914        North Central FL
58350        Bendigo FL
55756        Australian Football League / AFL / Victorian FL
50785        West Gippsland FL
49789        Great Southern FL
46047        Hills FL
44913        Ballarat FL
44567        Goulburn Valley FL
44356        Lexton FL
43422        Yarra Valley Mountain District FL
42560        Murray FL
41146        Picola And District FL
39849        Horsham District FL
39603        Panton Hill FL
37324        Warrnambool & DFL
36740        Tasmanian FL
35218        Central Riverina FL
34507        Lameroo & DFL
34447        Western Australian FL
32530        Murray Lands FL
30097        Yorke Peninsula FL
29570        North Eastern FU
28927        Sydney FL
28614        Oatlands District FA / Oatlands District Football Competition
28240        Upper Murray FA
28019        Gippsland-La Trobe Valley FL
27419        Mid-Murray FL / Central Murray FL
27415        Barossa And Light FA
27310        Victorian Junior FA
26912        Kyabram FL
26621        Tallangatta & DFL
26266        Mid South East Football League
25693        North Gippsland FL
25433        Heathcote DFL
25400        Northern Mallee FL
25098        Loddon Valley FL
24587        Western Border FL
24580        Kowree-Naracoorte FL
24487        Millewa FL
24271        Maryborough-Castlemaine FL

Top 50 Clubs by kb 19/3/04 :
18286        Waratahs FC
17733        Warracknabeal FC
17127        Saint Marys FC
15406        Ararat FC
14001        Wanderers FC
13741        Pyramid Hill FC
13465        Avoca FC
13164        Sandringham FC
13121        Ballarat FC
12634        Cowwarr FC
12403        Works & Housing / Nightcliff FC
12316        Stawell FC
12036        Donald FC
11731        Navarre FC
11428        Upwey-Tecoma FC
11384        Geelong West FC
11209        Golden Point FC
11085        Darwin FC
10820        Marnoo FC
10670        Saint Kilda FC
10550        Watchem-Corack FC
10347        Buffaloes FC
10240        Kapunda FC
10238        Lexton FC
10199        Port Adelaide FC
10191        Saint Arnaud FC
10159        Fish Creek FC
10049        East Fremantle FC
9753        Essendon FC
9396        Birchip FC
9358        Angaston FC
9199        Melbourne FC
9196        Williamstown FC
9121        Bealiba FC
8962        Pakenham FC
8811        North Hobart FC
8767        Traralgon FC
8704        Hampton FC
8668        Southern Amateur FL
8632        Rupanyup FC
8587        Panton Hill FC
8511        Camberwell FC
8511        Maryborough FC
8489        Osborne FC
8465        Horsham FC
8463        North Ballarat FC
8440        Box Hill FC
8420        North Melbourne FC
8298        Port Melbourne FC
8276        Loxton FC

Total kb size of all club and league files = 11,679,369 :)
Footypedia, a labyrinth of local aussie rules history - www.footypedia.com