in southeast New South Wales and had a population of around 6,415 (49.1% male, 50.9% female) at the . Around 1819, families lived in the area and of those 40.7% had one or more children under the age of 15. 19.6% of families had only a single parent while 38.6% of couples had no children. Oak Flats covers an area of approximately 359 hectares (887 acres). Of the 2,317 private dwellings in Oak Flats, 42.6% were owned outright by their occupiers, 33.2% were being purchased (e.g. by mortgage) and 21.5% were being rented. On average, there were around 2.6 people per private dwelling in the area. The composition of occupied private dwellings in Oak Flats was as follows: 85.9% separate houses, 11.7% semi-detached houses (e.g. townhouses, row or terrace houses), 1.5% flats (including units and apartments). In terms of people aged 15 years or more living in Oak Flats, 48.8% were married, 9.6% were divorced, 4.3% were separated, 6.2% were widowed and 31.0% had never married. Geography Oak Flats varies in altitude/elevation from about −4 m (-13.12 ft) (highlight point) to 36 m (118 ft) (highlight point) above sea level. The postcode for Oak Flats is 2529. Neighbouring suburbs/regional areas of Oak Flats include Albion Park Rail, Albion Park, Blackbutt and Mount Warrigal. Education Oak Flats has four major schools within its boundaries, including Balarang Primary, Oak Flats Primary School, Oak Flats High School and Corpus Christi Catholic High School. Oak Flats High School Oak Flats High School is a government-funding secondary school, which was opened on a site on the eastern end of the suburb in 1962. It has 760 enrolments and provides education to children between year 7 and year 12. Balarang Public School Balarang Public School was opened in 1968 in a four hectare landscape in Oak Flats. It is located right next to Oak Flats High School. The school provides education to children between Kindergarten and year 6 and draws 30% of its enrolments from other surrounding suburbs. The name of the school is an Indigenous meaning for 'place of swamp oak'. Corpus Christi Catholic High School Corpus Christi Catholic High School is a Catholic co-educational school which opened in 2006 with its first group of Year 7 students. The students are drawn from the parishes extending from Port Kembla in the north to Kiama in the south. Since the opening, Corpus Christi has grown to