Almost three quarters of the Dubbo population is overweight or obese.
A whopping 72.4 per cent of people in the city are in one of the two worrying weight categories.
Also alarmingly, 70 per cent of adult Dubbo residents did little to no exercise in the week before the data was collected.
Local youths are affected by this epidemic also. With a almost a quarter of the two-year-olds to 17-year-olds in the Dubbo Local Government Area categorised as obese or overweight.
The data was released by the Mitchell institute at Victoria University ahead of World Obesity Day, which was on Friday.
Professor Rosemary Calder from the Mitchell Institute believes action is needed to focus prevention strategies in disadvantaged communities, adding wealthier suburbs in metropolitan areas have a lower obesity rate because they are well serviced by public transport and bike paths and healthier food.
"[These places] are relatively close to where people work which enables people to be physically active in their commute to work rather than rely on the car," she said.
"They have a greater density of shops selling fresh fruit and veg, greater competition promoting lower prices for healthy foods and fewer fast food outlets."
Bathurst and Orange are also suffering from high obesity and overweight rates, although the rates are lower than the Dubbo rate. Orange has 71.1 per cent of people classified as obese or overweight. Bathurst is is the lowest of the three with 70.7 per cent in the overweight or obese weight class.
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Professor Calder said local governments need to be doing more.
"Local governments are critical to local planning and the creation of health and active spaces for their residents. However, they are often hampered by lack of funding and regulatory power," she said.
The data shows the national obesity rate has risen 27 per cent over the past 10 years, and two thirds of Australians are overweight or obese.
The data by area is from 2014-2015, national average overweight and obesity is from 2017-2018. Sourced from the Australian Bureau of Statistics.