From 2000 through 2010, rural Pennsylvania public school district enrollment has decreased by 8 percent. In 2010, there were 726,417 children in rural Pennsylvania, or 21 percent of the total rural population. From 2000 to 2010, the number of children in rural counties decreased 7 percent. The decline in the number of children impacted most rural counties with 42 of Pennsylvania's 48 rural counties experiencing a decline. Cameron County, Elk County and Sullivan County experienced the greatest declines, with a decrease of more than 21 percent in all three counties. Adams County's live birth rate was 1,132 births in 1990. Adams County's live birth rate in 2000 was 1,048 births while in 2011 it had declined to 1,039 babies. Over the past 50 years (1960 to 2010), rural Pennsylvania saw a steady decline in both the number and proportion of residents under 18 years old. In 1960, 1.06 million rural residents, or 35 percent of the rural population, were children.