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Central Coast NSWPopulation forecast

Coastal District

Population and age structure

Between 2021 and 2031, the age structure forecasts for Coastal District indicate a 5.8% decrease in females under working age, a 51.7% increase in females of retirement age, and a 2.3% increase in females of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of Central Coast NSW is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

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Forecast age structure - 5 year age groups
Coastal District - Total females202120312046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 49525.19864.89574.5+5
5 to 91,2126.51,1265.41,0785.0-134
10 to 141,3567.21,2035.81,1525.4-205
15 to 191,2686.81,1615.61,0665.0-202
20 to 249114.91,0325.09234.3+12
25 to 297714.19194.48544.0+83
30 to 348774.79474.69404.4+63
35 to 391,1406.11,1835.71,1985.6+58
40 to 441,2666.81,3296.41,2715.9+5
45 to 491,3567.21,3146.31,2635.9-93
50 to 541,3827.41,2526.11,2996.1-82
55 to 591,2766.81,3556.51,3736.4+98
60 to 641,3137.01,3336.41,3476.3+34
65 to 691,2336.61,3196.41,2976.1+63
70 to 741,0015.31,3256.41,2936.0+292
75 to 796853.71,1155.41,1985.6+513
80 to 844222.28814.31,0564.9+634
85 and over3251.79214.41,8678.7+1,541
Total persons18,746100.020,700100.021,432100.0+2,686
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), May 2024.

Key findings

In 2021, the dominant age structure for females in Coastal District was ages 50 to 54, which accounted for 7.4% of the total females.

The largest increase in females between 2021 and 2031 is forecast to be in ages 85 and over, which is expected to increase by 596 and account for 4.4% of the total females.

The largest female 5 year age group in 2031 is 55 to 59 years, with a total of 1,355 females.

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