Horndean expanded in the early Middle Ages due to its convenient position as a staging poston the road from Portsmouth to London. In 1836 it became home to the Hon. Sir Charles Napier Senior, father to the more famous Sir Charles Napier, who purchased a property in the village called The Grove but subsequently changed its name to Merchistoun Hall. Merchistoun Hall is now a Grade II listed building and serves as the village's major community centre. Horndean was bypassed by main line railways but was served by trams of the Portsdown and Horndean Light Railway until 1935 and thereafter by buses. A three-storey workhouse was built during Victorian times to home the local poor. This stood on a site currently developed into a large retirement complex in 2017/18. This building had served a number of purposes including a local swimming pool. This was its primary function during the 1970s, provided by the use of a large polythene lined 'tank' on its ground floor. Using the pool was a fairly unpleasant experience by today's standards due to its small size, lack of poolside space and most of all - daylight. The first and second floors were used in latter years as a small lampshade factory. Defunct and dangerous, the entire building was demolished in spring 1982, leaving a small building that was closed and eventually demolished with the construction of the new retirement development in 2017. In the spring of 1944, British and Canadian troops were based around Horndean as they prepared for the D-Day invasion of Europe. Gunners of the 92nd Light Anti-Aircraft Regiment, Royal Artillery, were encamped in Hazleton Wood, near Merchistoun Hall. The village experienced significant expansion in the 20th century, particularly with the building of the Hazleton estate on the former grounds of Merchistoun Hall in the early 1960s, and the building of the A3 motorway in the 1970s, which passes under a bridge adjacent to the village centre. The easy access to the motorway has encouraged an influx of light industry to the village, most of it concentrated in three major estates, the most recent of which is Hazelton Interchange, built in the early 1990s. The centre of the village has a 1960s built small shopping precinct which is home to specialist businesses, as well as a cafe, fast food and newsagent.
Meaning of name
Dean refers to the old English word "denu" meaning valley, and the name Horndean most likely means "valley by a horn-shaped hill". Alternatively "Harne" is the old English word for Dormouse making it "valley of the Dormouse". The second part of the name, Dean, can also mean forest, giving rise to further connotations.
Community
Horndean's major community centres are Horndean Community Association at Merchistoun Hall and Barton Hall, Horndean Technology College. There is also a youth centre, . Other venues include Napier Hall, which was partially rebuilt in 2004, and the Jubilee Hall, opened in 2002. The two C of E churches in the area are Holy Trinity at Blendworth and All Saints in neighbouring Catherington. The surrounding villages are Catherington, Cowplain, Blendworth, Rowlands Castle and Clanfield.
Sport and leisure
Horndean has a Non-League football club Horndean F.C., which plays at Five Heads Park.
Twinning
The village of Horndean has been 'twinned' with the town of Aubergenville in France since 1998. Various activities and exchange visits are organised by the Horndean Parish Twinning Association.
