The 2,000th season ticket was sold to Lou Horvath late afternoon yesterday.
Lou, who is from New Whittington, met manager Martin Allen and was handed a shirt printed with '2000' on the back to mark the milestone.
Lou said: "I have followed Chesterfield since I could barely talk. I've had a season ticket every year since we moved from Saltergate.
"I'm loyal and it's my football club. We've always had good support and there's fantastic loyalty here."
Discounted 'early bird' season tickets can be purchased until Saturday, June 30. The Club Superstore will be open until 6pm on Friday and from 9am to 2pm on Saturday.