The West Midlands conurbation is the large conurbation that includes the cities of Birmingham and Wolverhampton and the towns of Sutton Coldfield, Dudley, Walsall, West Bromwich, Solihull, Stourbridge and Halesowen in the English West Midlands. It is also referred to as the Birmingham urban area and is one of the most populated and densely populated built-up areas in the United Kingdom.