There's an attendance thread on the Irish League Supporters forum that should answer your question(s). Some recent attendances figures are posted below.
Quote:
1st March
Crusaders v. Glenavon - 1969
2nd March
Cliftonville v. Lisburn Distillery - 416
Coleraine v. Institute - 738
Linfield v. Portadown - 1573
9th March
Glentoran v. Institute - 761
Linfield v. Dungannon Swifts - 1187
13th March
Ballymena United v. Portadown - 881
Crusaders v. Newry City - 675
Glenavon v. Dungannon Swifts - 250
Institute v. Lisburn Distillery - 250
16th March
Cliftonville v. Linfield - 1979
Institute v. Crusaders - 300
Newry City v. Coleraine - 184
19th March
Portadown v. Coleraine - 1979
20th March
Dungannon Swifts v. Cliftonville - 345
Linfield v. Ballymena United - 1610
Lisburn Distillery v. Crusaders - 250
Newry City v. Glentoran - 640
23rd March
Cliftonville v. Glentoran - 1307
Dungannon Swifts v. Coleraine - 320
Linfield v. Glenavon - 1346
Lisburn Distillery v. Newry City - 105
25th March
Crusaders v. Ballymena United - 648
3rd April
Coleraine v. Portadown - 937
Glentoran v. Dungannon Swifts - 1119
Lisburn Distillery v. Ballymena United - 160
6th April
Ballymena United v. Coleraine - 1300
Glenavon v. Institute - 200
Linfield v. Glentoran - 4385
8th April
Cliftonville v. Crusaders - 902
10th April
Dungannon Swifts v. Linfield - 1160
Lisburn Distillery v. Institute - 90
13th April
Coleraine v. Newry City - 469
17th April
Crusaders v. Glentoran - 1279
Glenavon v. Lisburn Distillery - 300