Viewing figures for Sam Bailey's victory were up over a million from Saturday's show to an average audience of 9.51 million (36.3%) from 7.30pm. An added 219,000 (0.9%) tuned in on +1.
This is down around 1.4m from last year's average score, and is the lowest-rated final since 2004's launch series, seen by 8.1m viewers. Last night's episode peaked with an audience of 10.6m (34.9%) at 8.45pm.
On BBC One, Strictly Come Dancing was up nearly 300k from last week's results show to 9.63m (38.9%) at 7pm.
Sports Personality of the Year 2013 scored 5.72m (22%) at 7.45pm, which is down around a massive 9m from last year. However, last year's edition was not up against the X Factor final, and marked a historic year in British sport.
Audiences peaked at 7.82m in the last 15 minutes of the broadcast, as reigning Wimbledon champion Andy Murray was named BBC Sports Personality of the Year.
BBC Two's Great British Sewing Bee interested 1.15m (4.5%) at 7.45pm, followed by Keira Knightley movie The Duchess with 1.43m (5.6%) at 8.45pm.
Later on ITV, Through the Keyhole entertained 3.72m (16.0%) at 9.30pm (295k/2.1% on +1).
On Channel 4, Britain's Killer Storms appealed to 1.42m (5.5%) at 7.30pm (143k/0.5%), while the latest Homeland thrilled 1.59m (6.1%) at 9pm (214k/1.1%).
Channel 5's broadcast of Ghost Rider achieved 919k (3.5%) at 7.30pm (187k/0.7%).
On BBC Three, Family Guy amused 697k (3.1%) at 10pm. ITV2's The Xtra Factor entertained 1.11m (4.7%) at 9.30pm (121k/0.9%).
BARB ratings data supplied by Attentional