Pope's signing for the Millers equals their record transfer fee paid for a player at the club with previous players Lee Glover, Alan Lee, Tony Towner and Martin Butler all signing for £150k over recent years.
Pope travelled upto the Don Valley Stadium this afternoon to undergo a medical and accepted terms with the Millers and agreed to a 3-year-deal.
Pope signed for the Alex back in 2006 for a nominal fee from Biddulph Victoria after being spotted by Neil Baker.
Pope did not break into the first team straight away and had to wait until March 2007 to make his debut where came on as a sub in the 1-0 away defeat at Gilligham. Pope went on to make 3 more appearances that season.
Pope's first league goal came in the 2007-08 season in the 1-1 away draw at Bristol Rovers and Pope's last goal for the club was a brace in the 3-2 home defeat against Leeds United.
Sneyd Green born Pope made 56 appearances netting 17 goals with last season being his most productive as he netted 9 goals in 33 appearances.
The clubs chief operating officer Paul Douglas told themillers.co.uk; "Tom has agreed terms on a deal with us today and we are looking forward to seeing him action when pre-season starts next month,"
"I believe the signing of Tom is proof of this clubs undoubted ambition to challenge with the top teams in the division. We are very pleased to have signed him and I am sure he will be a real hit with our supporters." he added.