In the 19th and early 20th century, Summerhill was predominantly focused around local
farming or
coalmining industries, however there was also nearby
Brymbo Steelworks and
Bersham Ironworks for those who could travel. The nearest
colliery was
Westminster Colliery, located within the
Moss Valley. Most of the area's coalmining industry was closed by the mid 20th century. Remnants of the area's former industrial history include disused features such as railway trackbeds, bridges and tunnels, particularly surrounding the Moss Valley areas. Throughout the 1970s and 1980s, a number of housing developments increased the local population and the overall size and shape of the village. Developments in the village include White Lion Estate, built in the 1990s, and more recent developments including Summerhill Park and Westminster Rise, built in the 21st century. ==Local services==