HEMEL-HEMPSTEAD, a market-town of England, county of Hertford, 24 miles N.W. of London. It stands on the acclivity of a hill rising from the small River Gade, and consists of one main street of considerable length. The parish church is a cruciform, and partly Norman structure, surmounted by a lofty octagonal spire. The town-hall is a long narrow building with an open market-place underneath. Market-day, Thursday. Straw-plaiting is extensively carried on. In the vicinity are several large paper mills. Pop. (1851) 2727.