Rhyl is a seaside town and community in Denbighshire in Wales. The town lies on the coast of North Wales, at the mouth of the River Clwyd. To …Rhyl is a seaside town and community in Denbighshire in Wales. The town lies on the coast of North Wales, at the mouth of the River Clwyd. To the west is Kinmel Bay and Towyn, to the east Prestatyn, and to the south-east Rhuddlan and St Asaph. At the 2011 Census, Rhyl had a population of 25,149, with Rhyl–Kinmel Bay having 31,229. Rhyl forms a conurbation with Prestatyn and its two outlying villages, the Rhyl/Prestatyn Built-up area, whose 2011 population of 46,267 makes it North Wales's most populous non-city. Rhyl was once an elegant Victorian resort town, but suffered rapid decline around the 1990s and 2000s; attempts have been made to reverse this through county investment, equal to around £15 million from Denbighshire County, however, the outcomes have been perceived with varying levels of success.