Bradford City and Middlesbrough made headlines across the world as they humbled Chelsea and Manchester City respectively in front of 40,000 plus crowds at Stamford Bridge and the Etihad Stadium.
And Anfield boasted a crowd of almost 44,000 as Bolton Wanderers held Liverpool to a 0-0 draw.
The Wanderers were cheered on by a huge away following with the Championship club laying on 60 coaches to the red half of Merseyside.
Brighton & Hove Albion set a new Amex Stadium record of 30,278 for the visit of FA Cup holders Arsenal while the Midlands derby between Birmingham City and WBA was packed to the rafters with the Premier League side taking 5,500 fans to St. Andrews, their biggest away following in seven years.
Staying with the Midlands and Aston Villa and Derby County both drew crowds of just under 30,000 as they sealed their places in the Fifth Round draw which takes place on The One Show on Monday night at 7,20pm.
The attendance figures show that the 15 Fourth Round ties from across Friday and the weekend were played out in front of stadiums bordering on an average of 80% capacity.
Rochdale and Stoke City will be looking to add to that figure when they meet at Spotland on Monday, live on BT Sport 1.