the Queen Mother Hospital for Animals. At the 2011 Census the population was 8,921. Etymology North Mymms is spelt differently from its sister village of South Mimms. The spellings Mymms and Mimms appear to have been used interchangeably over the centuries, until 20 February 1939 when Hertfordshire County Council decided that the spelling be fixed as Mymms''. References External links North Mymms News Community news and information website. North Mymms History Project Curating and digitising the history of North Mymms North Mymms Parish Council Victoria County History of North Mymms 1908 North Mymms - Parish and People North Mymms Park Official Website North Mymms Youth Project a large thriving youth club based in the Parish AFC Mymms Football Club North Mymms Cricket Club Villages in Hertfordshire Civil parishes in Hertfordshire Welwyn Hatfield