The Southampton venue, which opened in 2001, will become England's 10th Test ground when it hosts one game of a three-Test series - with Cardiff hosting one of the others.
Both grounds will also host one-day internationals against Australia in 2010 and India in 2011.
The Swalec Stadium, on the Sophia Gardens site, was awarded Test match status in April 2006 and a £9.5m redevelopment has boosted capacity from 5,500 to 15,643.
As well as the 2009 Ashes, venues have been announced for 2009, 2010 and 2011 - including tours by Zimbabwe, Bangladesh, West Indies, Sri Lanka and India.
However, Old Trafford was not awarded a Test match during the three-year period.
2009 Ashes Series: England v Australia Wednesday, 8 July - Sunday, 12 July - 1st Test (Cardiff) Thursday, 16 July - Monday, 20 July - 2nd Test (Lord's) Thursday, 30 July - Monday, 3 August - 3rd Test (Edgbaston) Friday, 7 August - Tuesday, 11 August - 4th Test (Headingley) Thursday, 20 August - Monday, 24 August) - 5th Test (The Oval)
One-day internationals: Rose Bowl, Lord's, The Oval, Lord's, Trent Bridge, Trent Bridge, Riverside Twenty20 internationals: Old Trafford (two matches)
NB The schedule for the one-day series is expected to be confirmed by the end of April.
Other venues announced (with dates still to be announced):
2009 World Twenty20: Lord's, The Oval, Trent Bridge World Twenty20 (women's): Taunton (group matches), Lord's (final) Tests v Zimbabwe (provisional - as Zimbabwe have not played Test cricket since September 2005 and are unlikely to return until they can prove they can be competitive at international level)
: Lord's, Riverside ODIs v Zimbabwe: Headingley, Edgbaston, Bristol Twenty20 Cup finals day: Edgbaston Friends Provident Trophy final: Lord's
2010 Tests v Bangladesh: Venue TBC, Headingley ODIs v Bangladesh: Trent Bridge, Bristol Tests v West Indies: Lord's, Trent Bridge, Edgbaston, The Oval ODIs v West Indies: Rose Bowl, The Oval, Headingley, Riverside, Lord's ODIs v Australia: Cardiff, Rose Bowl, The Oval, Lord's, Old Trafford Twenty20 internationals: TBC Twenty20 Cup finals day: Rose Bowl Friends Provident Trophy final: Lord's
2011 Tests v Sri Lanka: Cardiff, Rose Bowl, Lord's ODIs v Sri Lanka: Trent Bridge, Headingley, Edgbaston, The Oval, Old Trafford Tests v India: Lord's, Trent Bridge, Edgbaston, The Oval ODIs v India: Cardiff, Riverside, Rose Bowl, The Oval, Lord's Twenty20 internationals: Two from Headingley, Bristol, Old Trafford and Riverside Twenty20 Cup finals day: Riverside Friends Provident Trophy final: Lord's
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