The area consisting of the future Ermington-Rydalmere municipality was first incorporated on 23 March 1889, when the "Borough of Dundas" was proclaimed in the lands east of the Town of Parramatta.
[2] However this state of affairs was short-lived, when 94 residents submitted a petition to the NSW Government on 13 February 1891 requesting the creation of a separate municipality divided into two wards.
[3] This petition was subsequently accepted and the Governor of New South Wales, The Earl of Jersey, proclaimed the establishment of the "Municipal District of Ermington and Rydalmere" on 18 June 1891.
[18] In July 1946, the Town Hall was set on fire during an attempted robbery, resulting in the loss of many of the council's records, but it was quickly renovated and re-opened in November 1946.
[23][24] The NSW Government however passed a bill following the recommendations of the Royal Commission in 1948 that abolished a significant number of Sydney metropolitan councils.