Wollongong City Age structure Share Twitter Facebook LinkedIn Email Wollongong CityAge structure maps To view how different age groups are distributed across Wollongong City, select from the list of thematic maps below: Median age 0 to 4 year olds 5 to 11 year olds 12 to 17 year olds 18 to 24 year olds 25 to 34 year olds 12 to 25 year olds 35 to 54 year olds 55 to 64 year olds 65 to 79 year olds 65 years and over 80 years and over