The village lies in a civil parish which is also officially called "Everingham" by the Office for National Statistics, although the county council and parish council refer to it as Everingham and Harswell, as the parish also includes the nearby village of Harswell. According to the 2011 UK census, it had a population of 304, a decrease on the 2001 UK census figure of 320, and covers an area of 1,662.03 hectares (4,107.0 acres).
There are two competing theories as to the origins of the village's name. Firstly, the theory that the village is named for St. Everilda, the daughter of 7th century King Cyneglis of the West Saxons, who fled her home to practice Christianity in seclusion. Upon reaching York she was allowed to set up a convent at a place that came to be known as 'Everildsham' (Everild's home), which some believe to have evolved into the current name; Everingham. No trace of the convent survives and the former location is unknown. The second theory is that the name is derived from 'Eofor's Ham', meaning the 'ham' (home) of Eofor's people, who may have been a Saxon tribe in the area. Eofor is a Saxon word meaning 'Wild Boar' that was commonly used in that era as a name, for example as the name of a warrior in the Saxon epic Beowulf.
The next historical mention of the village comes in the Domesday Book, when its population was recorded as 22. Though a small village for the time, it paid a large amount of tax relative to other comparable villages. The value of the village had decreased considerably by 1086, however, probably as a result of the widespread destruction caused by William the Conqueror during his campaign to suppress rebellion in the north. After that time the village grew in prosperity, largely thanks to the presence of Everingham Hall, which gradually became the seat of the estate land and property in the area and contributed to the development of nearby villages such as Seaton Ross. The current hall is a Grade I Listed structure built between 1757 and 1764 by John Carr.
In 1823 Everingham was in the Wapentake of Harthill. The then "neat modern church" was dedicated to the Blessed Virgin Mary. There was also a Roman Catholic chapel. Population at the time was 271, with occupations including thirteen farmers, one of whom was a farrier, a carpenter, a shopkeeper, and a shoemaker. A tailor was the landlord of The Ship public house, and a blacksmith was the parish clerk. There was a schoolmaster, a rector of the church who was church patron, a steward for William Constable-Maxwell [later the 10th Lord Herries of Terregles], described as a miner [more likely a "minor"; a person not yet of age], and Mrs Constable-Maxwell of the 'Hall'.
The village has two churches, both dedicated to St Everilda; St Everilda's (Church of England) and Ss Mary & Everilda, Everingham, (Roman Catholic). The latter church was designated a Grade I listed building in 1967 and is now recorded in the National Heritage List for England, maintained by Historic England, while the former was designated as Grade II*. There is only one other church in Britain dedicated to this saint, at Nether Poppleton, City of York. In a shrine to the saint in Half-Acre Lane harebells bloom, and are referred to as 'the holy harebells of St Everilda'. An elaborately carved gravestone inset into the floor of the nearby ancient church of St Peter in Harswell might mark the grave of St Everilda.
- "Everingham". Office for National Statistics. Retrieved 29 September 2017.
- UK Census (2011). "Local Area Report – Everingham Parish (1170211177)". Nomis. Office for National Statistics. Retrieved 17 February 2018.
- UK Census (2001). "Local Area Report – Everingham Parish (1543504223)". Nomis. Office for National Statistics. Retrieved 11 December 2018.
- "2001 Census Area Profile" (PDF). East Riding of Yorkshire Council. 2004. Archived from the original (PDF) on 18 March 2012. Retrieved 8 February 2013.
- "St. Everild of Everingham AKA "Averil, and Everildis"". Everingham Family History Record. Everingham Family History. Retrieved 22 November 2012.
- "Everingham". Surname Database. Surname Database. Retrieved 22 November 2012.
- Everingham in the Domesday Book. Retrieved 22 November 2012.
- Historic England. "Everingham Hall (1084130)". National Heritage List for England. Retrieved 12 August 2013.
- Baines, Edward (1823). History, Directory and Gazetteer of the County of York. p. 203.
- Historic England. "Chapel of the Virgin and Saint Everilda (1346301)". National Heritage List for England. Retrieved 12 August 2013.
- Historic England. "Church of Saint Everilda (1310669)". National Heritage List for England. Retrieved 17 August 2013.
- Gazetteer — A–Z of Towns Villages and Hamlets. East Riding of Yorkshire Council. 2006. p. 5.
- Media related to Everingham at Wikimedia Commons