Willian was an
ancient parish in the
hundred of
Broadwater. The parish of Willian was included in the
Hitchin Poor Law Union from 1835. The eastern side of the parish of Willian extended to the edge of the town of
Baldock, and in 1880 the Baldock
Local Board was given control of the parts of Willian parish where the town's urban area was starting to expand into Willian. The following year the parish boundary between Willian and Baldock was adjusted to match the local board boundary. Under the
Local Government Act 1894, the parish of Willian became part of the
Hitchin Rural District. Following the commencement of work on Letchworth Garden City in 1903, it became necessary to review administrative arrangements in the area. The civil parish of Letchworth was substantially enlarged in 1908 to take over all of Norton parish and the northern part of Willian parish. The reduced civil parish of Willian thereafter covered the village itself and the rural areas generally to the south of the village. The civil parish of Willian was abolished in 1935, being absorbed into the
urban district of Letchworth. Since then the village has been administered as part of Letchworth, which became part of
North Hertfordshire in 1974. At the 1931 census (the last before the abolition of the parish) it had a population of 210. ==Geography==