The size of Castle Hill is approximately 19 km². It has 28 parks covering nearly 6% of the total area. There are 13 schools and 9 childcare centres located in Castle Hill. The population of Castle Hill in 2001 was 30,680 people. By 2006 the population was 35,388 showing a population growth of 15% in the area during that time. The predominant age group in Castle Hill is 40 – 49 years.
Serviced Suburbs Select Suburb Abbotsford Acacia Gardens Alexandria Annandale Annangrove Arcadia Artarmon Asquith Auburn Balmain Balmoral Baulkham Hills Beecroft Bella Vista Birchgrove Blacktown Bondi Bondi Junction Box Hill Burwood Cammeray Camperdown Carlingford Castle Hill Chatswood Cheltenham Cherrybrook Chiswick Concord Cremorne Crows Nest Dean Park Denistone Doonside Drummoyne Dulwich Hill Dundas Dural East Ryde Eastwood Enmore Epping Ermington Five Dock Forestville Frenchs Forest Galston Girraween Gladesville Glebe Glenhaven Glenorie Glenwood Gordon Granville Greenwich Haberfield Harris Park Hornsby Hunters Hill Inner West Suburbs Kellyville Kenthurst Killara Killarney Heights Kings Langley Kings Park Kirribilli Lalor Park Lane Cove Lavender Bay Leichhardt Lilyfield Lindfield Longueville Macquarie Park Marayong Marrickville Marsfield Mays Hill McMahons Point Meadowbank Merrylands Middle Dural Milsons Point Mosman Mt Colah Naremburn Narrabeen Neutral Bay Newtown Normanhurst North Parramatta North Rocks North Ryde North Sydney Northmead Northwood Oatlands Old Toongabbie Parklea Parramatta Pendle Hill Pennant Hills Petersham Putney Pymble Pyrmont Quakers Hill Riverstone Riverview Rosehill Roseville Round Corner Rouse Hill Rozelle Rydalmere Ryde Schofields Seaforth Seven Hills St Ives St Leonards St Peters Stanhope Gardens Strathfield Telopea Thornleigh Toongabbie Turramurra Wahroonga Waitara Warrawee Waverton Wentworthville West Pennant Hills West Pymble West Ryde Westleigh Westmead Willoughby Winston Hills Wollstonecraft