Statistics

Given the current interest in population growth, in the third of my articles I’ll take a look at forecast population growth in Greater Western Sydney councils.

To reiterate, the projections I’m discussing are based on forecasts released by the NSW Government Bureau of Transport Statistics (BTS – formerly the Transport Data Centre) and the usual caveats apply about their reliability or otherwise.

In the last article I discussed the 14 Sydney councils that will have populations over 200,000 in 2036, compared to the two we had in 2006. As I noted, no less than nine of these councils are located in Greater Western Sydney (GWS). However, the story of forecast growth in GWS does not end just with these “mega-councils”.

The table below shows the projected population increases and growth rates across the 14 GWS councils. In total, the BTS forecast predict that the region will grow by over a million people or over 58%, significantly higher than the projected Greater Metropolitan Area (GMA) growth rate of just under 38%. This will result in GWS having over 40% of the total metropolitan area population, compared with 35.5% in 2006.

GWS Councils population forecasts

It should be noted that the GMA includes the Hunter and Illawarra; if these are excluded, Greater Western Sydney would hold about half of Sydney’s population by 2036.

Not surprisingly, the councils with populations over 200,000 each will experience the lion’s share of the region’s growth and in fact the average size of a GWS council would be just over 209,000 by 2036. Five of these councils (Blacktown, Camden, Campbelltown, The Hills and Liverpool) will also experience growth rates above the metropolitan average – in the case of Camden, Liverpool and Blacktown, substantially so.

Of the five councils not expected to grow to over 200,000 by 2036, Auburn, Wollondilly and Hawkesbury will still experience growth rates above the Sydney average. Only Blue Mountains and Holroyd are expected to reach neither 200,000 nor an above-average growth rate, though Holroyd’s forecast growth rate is only just under the metropolitan average.

I’ll discuss the implications of the high rates of growth in Greater Western Sydney and elsewhere in a future post.

Given the current obvious interest in “Big Australia”, big cities and all things to do with population I thought I’d take a further look at the so-called “mega-councils” of Sydney’s future that I identified in my last post.

To reiterate, the projections I’m discussing in these articles are based on forecasts released by the NSW Government Transport Data Centre (TDC – now renamed the Bureau of Transport Statistics) earlier this year and the usual caveats apply about their reliability or otherwise. I should also stress that I’m not taking a position about population issues or the optimum size of councils, but just pointing out some of the more interesting implications of the distribution of Sydney’s growth as forecast by the TDC. 

In the last article I noted that if we accepted the TDC’s projections based on the current boundaries, the number of councils in Sydney with populations over 200,000 would grow from just two in 2006 (Blacktown and Sutherland) to 14 in 2036. OK, so which councils will be over the 200,000 mark by then? 

The following table identifies the councils in this group and their projected growth over the 30 years from 2006 to 2036. Its important to note that the “top 14” in 2036 were not necessarily the largest councils in 2006 and they are not all necessarily the fastest-growth Sydney councils – although their average rate of growth is well above the Sydney average of around 38% and the average forecast numerical increase is almost 50,000 more than the average for Sydney councils. Combined, they will house just over half of Sydney’s population in 2036.

Councils forecast to be over 200,000 in 2036

The other interesting aspect is their location. All but Sydney City Council are in outer-ring – or at least on the outer edge of the middle ring – suburbs. They form a “donut” around the city from Wyong and Lake Macquarie to the north, through Greater Western Sydney (where nine of the 14 are located) to Sutherland and Wollongong to the south. 

In summary, the 14 councils forecast to have over 200,000 people each by 2036 will: 

• Be home to over 1.2 million additional residents, or nearly 62% of Sydney’s overall growth;
• Grow by an average of 50% or over 87,000 people, compared to a city average rate of around 38% and 37,300 per council, with Camden set to grow by a staggering 390%;
• As a result, accommodate over 3.6 million people or over half of the city’s forecast population of just under 7.19 million.
• Have average populations of nearly 260,000 each (almost double the forecast Sydney average of 135,600), though this figure is skewed by the projected size of Liverpool (over 324,000) and Blacktown (over 48,1000)
• With the exception of Sydney city, be located around the city’s middle to outer suburban ring, with nine of the 14 in Greater Western Sydney. 

I’ll explore a few more implications of Sydney’s projected population growth at the council and regional levels in future posts.

If you were told that by 2036 the number of councils in Sydney with populations of more than 200,000 would be seven times the number today, you might be forgiven for thinking that these forecasts were based on some fairly strong assumptions about council amalgamations. 

In fact, as somebody pointed out to me recently, if Sydney’s population grows in the way that State Government forecasts suggest, the mega-councils, or at least the reasonably large councils, will come to us without a single boundary change or amalgamation. 

A check of the latest forecasts from the NSW Transport Data Centre (TDC – in the process of becoming the Bureau of Transport Statistics) makes this clear. These assume that the population of the Sydney Greater Metropolitan Area (GMA, which also includes the Hunter and Illawarra) will grow by almost two million people, from 5.21 million to 7.19 million, an increase of around 40%. The TDC has also made forecasts of Local Government Area (LGA) population growth based on the current council boundaries. 

Before I go on I should make all the usual qualifications – population forecasting this far out, especially at the LGA level, is an inexact science, reliant on all sorts of assumptions about factors such as migration and decentralisation policies. Lately some of these factors have come under intense scrutiny as part of the “Big Australia” debate. 

These forecasts are also based on another fundamental presumption – that the current council boundaries will not change at all in the next 25 years. However, it is instructive to run with this and see what happens if the current boundaries are left intact. 

First, a 40% increase in Sydney’s population would mean a similar substantial increase in average council size, from 98,300 to 135,600. Naturally this growth rate will not be uniform across all councils but even if it is, the outcomes in numerical terms are obviously going to be much more noticeable in the larger councils. 

The graph below shows the distribution of councils in 2006 and 2036 in population bands starting with zero to 50,000, 50,000 to 100,000 and so on. Councils with over 200,000 have been grouped together in a single band. The number at the bottom of each column is the number of councils in that band for either 2006 or 2036. 

Sydney Councils: projected growth by population bands, 2006-2036

It should be noted a similar number of councils in 2006 and in 2036 in a particular band does not necessarily mean that these are the same councils. Some 2006 councils may have increased in population to the extent that they have moved into a higher band, to be replaced by councils increasing in population from the band below. 

With that qualification in mind, let’s have a look at the estimates. The middle bands, 50,000 to 100,000 and 100,000 to 150,000, remain relatively stable both in terms of the number of councils and population. However the number of councils under 50,000 is halved from 12 to 6, while the number of councils in the 150,000 to 200,000 band decreases from 11 to 6. Both bands will also experience similar proportional declines in total population. 

The story for the 200,000 councils is a marked contrast. In 2006 there were only two (Blacktown and Sutherland), totalling just under half a million. By 2036 there could be 14 such councils with a combined population of over 3.6 million. 

It can be argued that most of the projected 12 additional members of the “200,000 club” were in the 150,000 to 200,000 category in 2006 and that this change is merely one of degree. To an extent this is true, but there are a few interesting exceptions. Campbelltown and Wyong leapfrog from the 100,000 to 150,000 band into this group, but the most spectacular change is that projected for Camden, which is estimated to grow from under 51,000 to nearly 250,000 in this period as a result of the development projected for Sydney’s south-west. 

It also has to be acknowledged that the forecast overall increase in the proportion of Sydney’s population in the largest councils, at around 2%, is relatively incremental. However if the overall population projections prove to be accurate and council boundaries remain unchanged, there could be some interesting challenges and opportunities in having 14 councils of this size collectively responsible for providing local services and infrastructure to over half of Sydney’s population by 2036.

Melbourne-based firm .id (informed decisions) have just launched economy.id, an online economic profile to “describe, explore and promote” local economies.

economy.id joins the .id stable of profiles and other web-based programs, including profile.id, atlas.id, forecast.id and housing.id. .id’s main client base is local government, with over 180 councils and regional organisations of councils across Australia using one or more .id product. However the beneficiaries of economy.id and the company’s other products are not just councillors and local government staff, as most councils also make these products available online for local residents, businesses, community organisations and others to use (click here for an overview of .id’s products).

economy.id (which so far can be viewed for Penrith City Council in NSW, the City of Monash in Victoria and the City of Joondalup in WA) has a deceptively simple structure. It sets out to answer questions in two key sections called “our economy”, focused on economic characteristics and performance and “our resources”, which concentrates on profiling the resident workforce as well as the labour force and key local infrastructure.

The questions include, for example, “what is the size of the local economy?”, “how is the local economy performing?” and “what are the local labour force characteristics?”. These questions economy.id attempts to answer through a series of accessible tables, graphs and thematic maps – and whilst the focus is on the local, most tables and graphs provide comparisons to relevant metropolitan and state level benchmarks.

Like the company’s other products, economy.id is hosted on the .id server, but councils and other clients can customise the profile’s appearance, incorporating their logos and linking it to their own websites. This approach is consistent with .id’s other products and the company has largely succeeded in maintaining a similar look and feel.

This belies the complexity involved in putting together a local economic profile, which has required the integration of a wide variety of data, including information from the census, national accounts, and other ABS data sources, DEEWR small area labour markets data and input-output modelling from REMPLAN. The latter is particularly significant for councils, providing accessible input-output modelling at the local level.

All this means that economy.id moves well beyond the parameters of .id’s “flagship” product, profile.id, which is mainly based on census data. Not surprisingly the costs are also higher, with an up-front charge of $35,000 and an annual fee of $7,500, the latter covering hosting the profile, regular updating as new data becomes available and a comprehensive training program. However, as a council staffer pointed out at the NSW launch, economy.id has the potential to deliver significant savings to councils in financial and staff resources.

Until now, councils interested in researching and analysing local economic performance have had to commission either academic researchers or private consultancy firms, usually on a one-off basis. Invariably this approach is very expensive and whilst the results can be and often are of a high standard, this has not always been the case. In addition the data produced has usually been static in nature and difficult to update, with limited community access, especially online.

economy.id succeeds in addressing these issues. It also provides a more consistent and higher standard of economic data available for use within council (ensuring, for example, that all reports to council use the same economic parameters and even the same graphs and tables) and in promoting the local area for investment. This information will also put councils in a much better position when negotiating with state government, federal government and the private sector.

This is not to say that economy.id is perfect. Ideally, some modules such as local infrastructure will be fleshed out with more material in future. In addition, the issues noted in the supporting information regarding data sources and quality need to be considered carefully. Whilst economy.id may not meet everyone’s requirements for local economic analysis but it will go a long way by providing a baseline of the best available and up-to-date economic data in a consistent and accessible format.

Whilst councils need to decide whether this product will meet their local needs (and, as with all web-based products, should always assess the relevant Web 2.0 risk factors discussed here), economy.id has the potential to provide great value for money. It will allow councils and others using economic information to redirect their resources away from basic number-crunching, formatting and presentation to more strategic analysis of the results.

Ultimately it will also provide a great local community resource. Local communities, businesses and organisations may well be the major beneficiaries, especially if enough councils across the country or even within a particular region adopt economy.id as their standard for local economic profiling and make it publicly available through their websites.

Disclaimer: whilst the author has no current relationship with .id, he was once involved in commissioning the company to prepare a regional profile based on the 2006 census.