The village is mentioned twice in the Domesday Book as Moretun. At the time of the Norman invasion, the lands were part of the manor of Kirkby Fleetham held by Gospatric, son of Arnketil, with some lands held by Grim. Afterwards the descent of the manor followed that of nearby Ainderby Steeple. The toponymy of the village is derived from the Old English word mōr for Moor and the word tun for farm, with the addition of the geographical reference to the nearby river, giving Moor farm on the River Swale.
The parish boundary is formed by the River Swale on the west and River Wiske on the east and south. The northern boundary runs just south of Thrintoft. The neighbouring parishes consist of Ainderby Steeple, Thrintoft, Scruton, Leeming, Gatenby, Maunby, Newby Wiske and Warlaby. The village lies on the A684 road between Northallerton and Bedale. The villages of Ainderby Steeple and Thrintoft are within a mile of the village. The highest point in the village is at the recreation ground. In September 2000, the Environment Agency installed a river level monitoring station in the village. It measures the water levels in the River Swale. The range of river levels is between and. The highest recorded level at this point on the river was on 6 September 2008. The Wensleydale Railway Association have extended their line, that currently runs from Redmire to Leeming Bar, to run just to the north of the village. This section open to traffic between 2014 and 2016, with a temporary station at Northallerton West and plans to go as far as the East Coast Main Line. This has meant the construction of two level crossings in the village.
Demography
Population
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-
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Year
1881
1891
1901
1911
1921
1931
1951
1961
2001
2011
Total
273
225
186
188
213
184
224
230
529
536
2001 census
The 2001 UK census showed that the population was split 48.6% male to 51.4% female. The religious constituency was made of 86.4% Christian and the rest stating no religion or not stating at all. The ethnic make-up was 98.1% White British, 1.13% White other and 0.75% Mixed Asian. There were 242 dwellings.
2011 census
The 2011 UK census showed that the population was split 46.6% male to 53.4% female. The religious constituency was made of 71.3% Christian, 0.4% Buddhist and the rest stating no religion or not stating at all. The ethnic make-up was 95.5% White British with the rest consisting of 4.3% each White Other and 0.2% Asian British. There were 250 dwellings.
Community and culture
There is no church in the village, though the Methodists did erect a chapel in 1815 which is now a Grade II listed private dwelling. The United Methodist Free Church also built a chapel in 1879, which is also private dwellings. The village is served by three bus routes running from Northallerton to RAF Leeming, Bedale and Hawes. There is one public house, a butchers shop and a village store that includes the local post office.
Education
Notwithstanding its name, Ainderby Steeple Church of England Primary School is situated on Station Lane, Morton-on-Swale which is within the catchment area of Northallerton School, which provides secondary education and sixth form facilities. Also located in the village near the Primary School is The Dales School, which is a special co-educational school for those with severe and complex learning requirements. It provides some post 16 years old education.