The channel has taken an average nightly share of 2.5% of the audience for this age group, ahead of commercial rivals E4, UK Gold, Bravo and Paramount, according to the broadcaster.
Among the programmes the BBC highlighted as successes include 'Burn It', a drama featuring six friends facing up to turning 30 and the responsibilities that come with it, and factual series 'Body Hits' and 'Liquid Assets'.
'Burn It' drew an average nightly audience of 190,000, while 'Body Hits and 'Liquid Assets' averaged more than 200,000 each.
The figures also show that more than 22.8m people, a 41% share of the UK TV audience, have sampled BBC Three programming, either on the channel itself or through special showings on BBC One and BBC Two on terrestrial TV.
Including the terrestrial coverage, 4.4m 25- to 34-year-olds, a 55% share of this age group, have watched the channel's programming.
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