South Mimms Rural District was created in 1894 by the Local Government Act 1894 and consisted entirely of the parish of South Mimms in Middlesex (part of which went to form the South Mimms Urban parish in Hertfordshire that same year) [REF].
The South Mimms parish and rural district was affected by minor boundary changes in 1894, 1896, 1924 and 1926 [REF][REF] In 1934 the rural district was abolished.