Melbourne is on track to become a megacity, with projections suggesting its population could swell to between 8 and 10 million by the end of the century. But how the city accommodates that growth has become a central question for planners, policymakers, and residents alike.
In a new report published across multiple Fairfax outlets, journalist Royce Millar explores the idea of redirecting Melbourne's population explosion away from low-density suburban fringes and towards existing urban transport hubs and regional towns. The centrepiece is an interactive map that lets users explore potential population density outcomes for their own suburb under this strategy.
The concept is rooted in transit-oriented development — a planning philosophy that concentrates housing, jobs, and services around public transport nodes to reduce car dependency, shorten commutes, and make better use of existing infrastructure. Proponents argue it could help Melbourne avoid the worst effects of sprawl, such as congestion, environmental degradation, and the high cost of extending utilities and roads.
Millar's report does not advocate for a specific policy, but rather presents the interactive tool as a way for Victorians to engage with the trade-offs involved. The map models scenarios where population growth is funnelled into areas around train stations, tram stops, and major bus interchanges, as well as into regional centres like Geelong, Ballarat, and Bendigo.
For many suburbs, the density increases shown are dramatic, raising questions about neighbourhood character, housing affordability, and local infrastructure capacity. In inner- and middle-ring suburbs near established transport corridors, the map shows potential for significant increases in population — a prospect that may alarm some residents even as it appeals to those seeking more housing options.
Conversely, the model suggests that without such a strategy, outer suburbs would continue to expand, placing greater pressure on roads, schools, and hospitals, and increasing commute times for hundreds of thousands of residents.
The report comes at a time when the Victorian government is already grappling with housing shortages, rising rents, and a growing homelessness crisis. It also coincides with ongoing reviews of Melbourne's planning scheme and the state's long-term infrastructure strategy.
Critics of transit-oriented development caution that simply zoning for higher density near transport hubs does not guarantee affordable housing, and that without adequate community infrastructure — parks, schools, healthcare — densification can reduce liveability. There are also concerns about the capacity of regional towns to absorb significant numbers of new residents without major investment in services and jobs.
Millar's piece does not offer easy answers, but it provides a powerful tool for visualising the scale of the challenge Melbourne faces — and the choices that will shape the city for generations to come.