Clear Mountain is a rural locality in the City of Moreton Bay, Queensland, Australia. In the 2021 census, Clear Mountain had a population of 807 people.

In the 2006 census, Clear Mountain has a population of 707 people. Of these, 51.3% were female and 48.7% were male. 77.9% of people living in Clear Mountain were born in Australia. The other top responses for country of birth were England 7.2%, New Zealand 2.4%, South Africa 2.3%, Scotland 1.1%, Netherlands 0.8%. 91.8% of people spoke only English at home; the next most common languages were 1.4% Afrikaans, 0.7% Italian, 0.7% Danish, 0.6% Cantonese, 0.4% German. The age distribution of Clear Mountain residents is comparable to that of the greater Australian population. 66.1% of residents were over 25 years in 2011, compared to the Australian average of 66.5%; and 33.9% were younger than 25 years, compared to the Australian average of 33.5%.