 After decades of population growth since the 1950s, the population in Susquehanna County has since begun to decline, concurrent with the expansion of natural gas drilling and accompanying infrastructure.Between 2010 and 2016, there was an estimated population decline of 5.8 percent.As of 2011, there were 1,079 active natural gas wells in the county which had collectively been issued 795 notices of violations by the Department of Environmental Protection of Pennsylvania.