[2] Until the late 1990s, Coolaroo's boundaries extended past the railway line and Pascoe Vale Road into the area that is now known as Meadow Heights.

In 2017, Some residents in Dallas, were evacuated after a fire started in SKM recycling plants in Coolaroo emitting smoke and ashes impacting local neighbourhoods.

[10] 210 residents launched an action and the Supreme Court ordered SKM to pay $1.2 million.

[13] In 2019, EPA Victoria removed more than 145,000 tonnes of contaminated waste at Glass Recovery Services in Coolaroo and around 9million litres of polluted water[14] after discovering several stockpile hotspots being at risk of fire.

[15] The popular 1997 Australian film The Castle was set in Coolaroo, although the house featured was actually located in Strathmore.