Cecil Park was originally home to the Cabrogal people who occupied much of the greater Fairfield area. When European exploration of the area began in the early 19th century, a nearby range was named Cecil Hills and this in turn inspired the name Cecil Park. The first white settler in Cecil Park was Simeon Lord.[2]
Cecil Park Post Office opened on 16 July 1897 and closed in 1966.[3]
At the 2016 census, there were 771 residents in Cecil Park. 65.1% of people were born in Australia. The most common other countries of birth were Italy 7.5%, Malta 2.8%, Iran 2.0%, Fiji 1.9% and Lebanon 1.6%. In Cecil Park 54.6% of people only spoke English at home. Other languages spoken at home included Italian 12.4%, Croatian 3.3%, Serbian 2.9%, Maltese 2.2% and Spanish 2.2%.[1]
Common ancestries include, Italian 24.3%, Australian 12.2%, English 10.0%, Maltese 8.5% and Croatian 4.2%. The most common response for religion was Catholic at 54.5%.[1]