There are three definitions of the town of Swindon for statistical purposes. The most accurate and widely accepted is the Built Up Area Subdivision, which had a population of 182,441 in 2011. Another definition is the Built Up Area, with a slightly higher population of 185,609 which includes outlying areas not often referred to as being part of the town, such as Wanborough. The final definition is the unparished area, with a population of 122,642. As its name suggests it reflects the former unparished area, now covered by the parishes of West Swindon, Central Swindon North and South, and Nythe, Eldene and Liden; thus it omits suburbs to the east and north, namely the parishes of Covingham, Stratton St Margaret and Haydon Wick.