Sydney has a high crime rate.
 The four most densely populated suburbs in Australia are located in Sydney with each having more than 13,000 residents per square kilometre (33,700 residents per square mile)
 Greater Sydney is served by:New South Wales Police ForceNew South Wales AmbulanceFire and Rescue NSW== Infrastructure ===== Education ===Education became a proper focus for the colony from the 1870s when public schools began to form and schooling became compulsory

