Colac Otway ShirePopulation forecast
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Colac Otway Shire

Population and age structure

Between 2011 and 2026, the age structure forecasts for Colac Otway Shire indicate a 5.6% increase in population under working age, a 36.0% increase in population of retirement age, and a 1.1% decrease in population 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 Colac Otway Shire 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.

Forecast age structure - 5 year age groups
Colac Otway Shire - Total persons201120262036Change between 2011 and 2036
Age group (years)Number%Number%Number%Number
0 to 4 1,2796.11,3135.91,3745.8+95
5 to 9 1,3226.41,4306.41,5046.3+182
10 to 14 1,3376.41,4146.31,4976.3+160
15 to 19 1,3676.61,2245.51,2945.5-73
20 to 24 1,1385.59894.41,0334.4-104
25 to 29 1,0965.31,0604.81,1064.7+9
30 to 34 1,0365.01,1625.21,2045.1+169
35 to 39 1,2355.91,2805.71,3545.7+120
40 to 44 1,3576.51,3786.21,4816.2+124
45 to 49 1,4186.81,3736.21,4896.3+71
50 to 54 1,4697.11,4286.41,5136.4+44
55 to 59 1,5067.21,4786.61,5406.5+34
60 to 64 1,3976.71,5106.81,5616.6+164
65 to 69 1,1405.51,4756.61,5256.4+385
70 to 74 8684.21,3266.01,3845.8+516
75 to 79 6983.41,0524.71,1744.9+476
80 to 84 6112.97403.39283.9+317
85 and over5362.66482.97653.2+230
Total persons20,807100.022,280100.023,725100.0+2,918

Population and household forecasts, 2011 to 2036, prepared by .id , the population experts, September 2014.

Forecast age structure - 5 year age groups
Forecast age structure - 5 year age groups Forecast persons aged 85+,  2036: 765 Forecast persons aged 80-84,  2036: 928 Forecast persons aged 75-79,  2036: 1,174 Forecast persons aged 70-74,  2036: 1,384 Forecast persons aged 65-69,  2036: 1,525 Forecast persons aged 60-64,  2036: 1,561 Forecast persons aged 55-59,  2036: 1,540 Forecast persons aged 50-54,  2036: 1,513 Forecast persons aged 45-49,  2036: 1,489 Forecast persons aged 40-44,  2036: 1,481 Forecast persons aged 35-39,  2036: 1,354 Forecast persons aged 30-34,  2036: 1,204 Forecast persons aged 25-29,  2036: 1,106 Forecast persons aged 20-24,  2036: 1,033 Forecast persons aged 15-19,  2036: 1,294 Forecast persons aged 10-14,  2036: 1,497 Forecast persons aged 5-9,  2036: 1,504 Forecast persons aged 0-4,  2036: 1,374 Forecast persons aged 85+,  2026: 648 Forecast persons aged 80-84,  2026: 740 Forecast persons aged 75-79,  2026: 1,052 Forecast persons aged 70-74,  2026: 1,326 Forecast persons aged 65-69,  2026: 1,475 Forecast persons aged 60-64,  2026: 1,510 Forecast persons aged 55-59,  2026: 1,478 Forecast persons aged 50-54,  2026: 1,428 Forecast persons aged 45-49,  2026: 1,373 Forecast persons aged 40-44,  2026: 1,378 Forecast persons aged 35-39,  2026: 1,280 Forecast persons aged 30-34,  2026: 1,162 Forecast persons aged 25-29,  2026: 1,060 Forecast persons aged 20-24,  2026: 989 Forecast persons aged 15-19,  2026: 1,224 Forecast persons aged 10-14,  2026: 1,414 Forecast persons aged 5-9,  2026: 1,430 Forecast persons aged 0-4,  2026: 1,313 Forecast persons aged 85+,  2011: 536 Forecast persons aged 80-84,  2011: 611 Forecast persons aged 75-79,  2011: 698 Forecast persons aged 70-74,  2011: 868 Forecast persons aged 65-69,  2011: 1,140 Forecast persons aged 60-64,  2011: 1,397 Forecast persons aged 55-59,  2011: 1,506 Forecast persons aged 50-54,  2011: 1,469 Forecast persons aged 45-49,  2011: 1,418 Forecast persons aged 40-44,  2011: 1,357 Forecast persons aged 35-39,  2011: 1,235 Forecast persons aged 30-34,  2011: 1,036 Forecast persons aged 25-29,  2011: 1,096 Forecast persons aged 20-24,  2011: 1,138 Forecast persons aged 15-19,  2011: 1,367 Forecast persons aged 10-14,  2011: 1,337 Forecast persons aged 5-9,  2011: 1,322 Forecast persons aged 0-4,  2011: 1,279
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, September 2014.
Forecast change in age structure - 5 year age groups
Forecast change in age structure - 5 year age groups Forecast persons aged 85+,  2026 to 2036: 118 Forecast persons aged 80-84,  2026 to 2036: 188 Forecast persons aged 75-79,  2026 to 2036: 121 Forecast persons aged 70-74,  2026 to 2036: 58 Forecast persons aged 65-69,  2026 to 2036: 50 Forecast persons aged 60-64,  2026 to 2036: 50 Forecast persons aged 55-59,  2026 to 2036: 62 Forecast persons aged 50-54,  2026 to 2036: 85 Forecast persons aged 45-49,  2026 to 2036: 116 Forecast persons aged 40-44,  2026 to 2036: 103 Forecast persons aged 35-39,  2026 to 2036: 74 Forecast persons aged 30-34,  2026 to 2036: 42 Forecast persons aged 25-29,  2026 to 2036: 46 Forecast persons aged 20-24,  2026 to 2036: 44 Forecast persons aged 15-19,  2026 to 2036: 70 Forecast persons aged 10-14,  2026 to 2036: 83 Forecast persons aged 5-9,  2026 to 2036: 74 Forecast persons aged 0-4,  2026 to 2036: 61 Forecast persons aged 85+,  2011 to 2026: 112 Forecast persons aged 80-84,  2011 to 2026: 129 Forecast persons aged 75-79,  2011 to 2026: 355 Forecast persons aged 70-74,  2011 to 2026: 458 Forecast persons aged 65-69,  2011 to 2026: 335 Forecast persons aged 60-64,  2011 to 2026: 114 Forecast persons aged 55-59,  2011 to 2026: -28 Forecast persons aged 50-54,  2011 to 2026: -41 Forecast persons aged 45-49,  2011 to 2026: -45 Forecast persons aged 40-44,  2011 to 2026: 21 Forecast persons aged 35-39,  2011 to 2026: 46 Forecast persons aged 30-34,  2011 to 2026: 127 Forecast persons aged 25-29,  2011 to 2026: -37 Forecast persons aged 20-24,  2011 to 2026: -148 Forecast persons aged 15-19,  2011 to 2026: -142 Forecast persons aged 10-14,  2011 to 2026: 77 Forecast persons aged 5-9,  2011 to 2026: 108 Forecast persons aged 0-4,  2011 to 2026: 35
Population and household forecasts, 2011 to 2036, prepared by .id the population experts, September 2014.

Key findings

In 2011, the dominant age structure for persons in Colac Otway Shire was ages 55 to 59 , which accounted for 7.2% of the total persons.

The largest increase in persons between 2011 and 2026 is forecast to be in ages 70 to 74 , which is expected to increase by 458 and account for 6.0% of the total persons.

The largest 5 year age group in 2026 is 60 to 64 years, with a total of 1,510 persons.

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