Environmental problems in urban spaces tend to result from excessive use of resources faster than the ecosystem can recover
itself. In order to address this problem, city or municipal governments tend to devise plans and policies to lead development
within their ecological carrying capacity. This study computes ecological capacity of Asan city, Province Chung Nam, South
Korea through applying the concept of ecological footprint. This study finds ecological footprint and deficit of Asan city in
2015 were 5.12 and -4.99, respectively. From 2001 to 2015, Asan city experienced not only an 81% increase of ecological
footprint, but also a 190% increase of ecological deficit. Such results suggest that Asan city has experienced a steady increase
of resource consumption due to population increase and urban growth, indicating that loss of ecological spaces such as green
space, farmland, wetland and so on restoring the ecosystem has been accelerated. Therefore, in order to promote sustainable
development, Asan city should not only protect green space, farmland, wetland, and so on but also create urban growth plans
and policies taking into account its environmental capacity of the city. This study provides suggestions for Asan city to lead
urban growth within its environmental capacity by applying ecological deficit.