CSNbbs

UAB is the only school from outside Power 5 in the Top 20

FBS National Average Attendance Leaders
through games of 9/26/2020
based upon official announced attendances

1 - 24,073 - Texas A&M (1 game)
2 - 22,700 - Oklahoma (2 games - 45,400 total)
3 - 21,124 - LSU (1 game)
4 - 18,609 - Clemson (1 game)
5 - 17,538 - Florida State (1 game)
6 - 17,490 - Auburn (1 game)
7 - 16,500 - Arkansas (1 game)
8 - 15,337 - Texas (1 game)
9 - 15,009 - South Carolina (1 game)
10 - 14,670 - Oklahoma State (2 games - 29,340 total)
11 - 13,926 - Mississippi (1 game)
12 - 13,886 - Texas Tech (2 games - 27,772)
13 - 12,716 - UAB (1 game)
14 - 11,852 - TCU (1 game)
15 - 11,650 - Louisville (2 games - 23,299 total)
16 - 11,738 - Missouri (1 game)
17 - 11,667 - Baylor (1 game)
18 - 11,041 - Kansas State (1 game)
19 - 11,000 - Georgia Tech (1 game)
20 - 10,480 - Miami (2 games - 20,959 total)

Other CUSA:
22 - 8,038 - North Texas (2 games - 16,075 total)
25 - 7,140 - Louisiana Tech (1 game)
26 - 6,397 - UTSA (2 games - 12,793 total)
27 - 6,052 - UTEP (2 games - 12,103 total)
28 - 6,025 - Marshall (2 games - 12,050 total)
29 - 6,000 - Middle Tennessee (1 game)
37 - 4,276 - Western Kentucky (1 game)

Teams officially reporting no attendance: Marshall (1), Southern Miss (3)

NOTE regarding Marshall and Southern Miss. Marshall did not announce attendance for their first game even though their were reportedly fans in attendance. Their OFFICIAL season stats on their athletics website list their total season attendance and their game average as those shown in the list above.
Southern Miss has listed the official attendance as 0 for each of those home games even though a limited number of fans were allowed to attend.

Pretty good considering the last minute replacement opponent on a Thursday during a pandemic.

Still, the only G5 school in the top 20.

FBS National Average Attendance Leaders
through games of 10/3/2020
based upon official announced attendances

1 - 24,073 - Texas A&M (1 game)
2 - 22,700 - Oklahoma (2 games - 45,400 total)
3 - 21,159 - Tennessee (1 game)
4 - 21,124 - LSU (1 game)
5 - 20,524 - Georgia (1 game)
6 - 19,424 - Alabama (1 game)
7 - 18,672 - Clemson (2 games - 37,344 total)
8 - 17,490 - Auburn (1 game)
9 - 16,545 - Texas (2 games - 33,090 total)
10 - 16,500 - Arkansas (1 game)
11 - 15,564 - Florida State (2 games - 31,127 total)
12 - 15,120 - Florida (1 game)
13 - 15,009 - South Carolina (1 game)
14 - 14,670 - Oklahoma State (2 games - 29,340 total)
15 - 13,926 - Mississippi (1 game)
16 - 13,886 - Texas Tech (2 games - 27,772)
17 - 13,564 - Mississippi State (1 game)
18 - 12,632 - UAB (2 games - 25,263 total)
19 - 12,000 - Kentucky (1 game)
20 - 11,852 - TCU (1 game)
21 - 11,738 - Missouri (1 game)
22 - 11,667 - Baylor (1 game)
23 - 11,650 - Louisville (2 games - 23,299 total)
24 - 11,000 - Georgia Tech (1 game)
25 - 10,987 - Kansas State (2 games - 21,973 total)

Still, the only G5 school in the top 20.

FBS National Average Attendance Leaders
through games of 10/10/2020
based upon official announced attendances

1 - 24,391 - Texas A&M (2 games)
2 - 23,133 - Oklahoma (3 games)
3 - 21,159 - Tennessee (1 game)
4 - 21,124 - LSU (1 game)
5 - 20,524 - Georgia (2 games)
6 - 19,424 - Alabama (1 game)
7 - 18,743 - Clemson (3 games)
8 - 17,490 - Auburn (2 games)
9 - 16,545 - Texas (2 games)
10 - 16,500 - Arkansas (1 game)
11 - 15,564 - Florida State (2 games)
12 - 15,120 - Florida (1 game)
13 - 15,009 - South Carolina (1 game)
14 - 14,670 - Oklahoma State (2 games)
15 - 14,173 - Mississippi (2 games)
16 - 13,886 - Texas Tech (2 games)
17 - 13,564 - Mississippi State (1 game)
18 - 12,632 - UAB (2 games)
19 - 12,030 - TCU (2 games)
20 - 12,000 - Kentucky (2 games)
21 - 11,667 - Baylor (1 game)
22 - 11,650 - Louisville (2 games)
23 - 11,000 - Georgia Tech (2 games)
24 - 10,987 - Kansas State (2 games)
25 - 10,876 - Missouri (2 games)

Keep the fans coming (safely)