The Championship leaders are already halfway towards that number following last Sunday's shut-out against Preston, and boast the meanest back line in the division with just 15 goals conceded.
Jackson now hopes that impressive form can be carried into the second half of the campaign as Latics push on for a place in the Premiership.
"I've been quoted many times in the past that I would rather win a game 1-0 rather than 5-1," said the skipper who has featured in 18 games so far this season.
"As a defender you don't want to concede goals and to me, keeping a clean sheet is just as important as scoring at the other end.
"Twenty clean sheets is what we are aiming for.
"If we do get close to that target, we will feel we have accomplished something this season regardless of how many goals we score.
"We did it in the Second Division championship season when we kept 25 clean sheets and targets you set have to be difficult to reach.
"It is certainly not something which happens by fluke, the lads work very hard with all aspects of the game.
"I remember the Notts County game at home the year we went up, and we conceded a goal in the last minute – it was the first we had let in for about seven games.
"The mood in the changing room afterwards having won 3-1 at an absolute canter was very sombre.
"It's great for a team to have that sort of responsibility throughout."
While helping keep the goals out at one end is Jackson's main job, he hasn't forgotten about his responsibilities at the other.
He's the only Latics defender to have hit the back of the net this season – a diving header at Wolves in September – and is in total agreement with manager Paul Jewell that the defence needs to be chipping in with a few more.
Jackson said: "The boss wants us to be a real threat from set-pieces and that's fair comment.
"Me and Ian Breckin have one between us at the moment which isn't a great return, and it's something we'd like to improve.
"Look at Steve Bruce when he was playing. Although he did take penalties, he had around 100 league goals to his name.
"From my Norwich days, I remember that Bruce Rioch had a fantastic idea of how the goals should be spread around a team.
"He would say that if the back four gets 10 between them, the midfield 10 each, and the front two get 20 each, that gets you promoted.
"Ten goals along the back four would be decent going in a season."
Jackson now hopes that impressive form can be carried into the second half of the campaign as Latics push on for a place in the Premiership.
"I've been quoted many times in the past that I would rather win a game 1-0 rather than 5-1," said the skipper who has featured in 18 games so far this season.
"As a defender you don't want to concede goals and to me, keeping a clean sheet is just as important as scoring at the other end.
"Twenty clean sheets is what we are aiming for.
"If we do get close to that target, we will feel we have accomplished something this season regardless of how many goals we score.
"We did it in the Second Division championship season when we kept 25 clean sheets and targets you set have to be difficult to reach.
"It is certainly not something which happens by fluke, the lads work very hard with all aspects of the game.
"I remember the Notts County game at home the year we went up, and we conceded a goal in the last minute – it was the first we had let in for about seven games.
"The mood in the changing room afterwards having won 3-1 at an absolute canter was very sombre.
"It's great for a team to have that sort of responsibility throughout."
While helping keep the goals out at one end is Jackson's main job, he hasn't forgotten about his responsibilities at the other.
He's the only Latics defender to have hit the back of the net this season – a diving header at Wolves in September – and is in total agreement with manager Paul Jewell that the defence needs to be chipping in with a few more.
Jackson said: "The boss wants us to be a real threat from set-pieces and that's fair comment.
"Me and Ian Breckin have one between us at the moment which isn't a great return, and it's something we'd like to improve.
"Look at Steve Bruce when he was playing. Although he did take penalties, he had around 100 league goals to his name.
"From my Norwich days, I remember that Bruce Rioch had a fantastic idea of how the goals should be spread around a team.
"He would say that if the back four gets 10 between them, the midfield 10 each, and the front two get 20 each, that gets you promoted.
"Ten goals along the back four would be decent going in a season."