Bury stormed into a 2-0 lead through Daniel Nardiello and Andy Morrell, only for a Lee Hughes double to bring County level before the break and when Stephen Dawson's superb 50th-minute strike looked set to win it for the hosts, County could have claimed all three points after Ritchie's late leveller.
Knill said: "It was a great game. At 2-0 up it's going well, but they've got some great players and if you give Lee Hughes chances, he'll score.
"But I'm not too disappointed. I think it's a really good point because for us to compete with them shows how far we've come.
"It was a fantastic start to score the two goals and we were really unlucky not to get a third before half-time, but it was fantastic effort and commitment from my players and it would have been harsh on either team if there was a winner."