The average household size was 2.65 and the average family size was 3.11. In the county, the population was spread out with 27.90% under the age of 18, 13.70% from 18 to 24, 32.90% from 25 to 44, 17.80% from 45 to 64, and 7.70% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 102.30 males. For every 100 females age 18 and over, there were 101.90 males. The median income for a household in the county was $37,466, and the median income for a family was $41,459. Males had a median income of $28,308 versus $22,379 for females. The per capita income for the county was $17,376. About 10.40% of families and 12.80% of the population were below the poverty line, including 16.80% of those under age 18 and 13.70% of those age 65 or over. Cumberland County is a member of the regional Mid-Carolina Council of Governments. Cumberland County is home to Fayetteville State University (an HBCU in the CIAA Conference), Methodist University (a member of the USA South Athletic Conference), and Fayetteville Technical Community College. The Cumberland County Schools system is the fourth largest public school system in the state of North Carolina. There are 17 high schools in Cumberland County: Cape Fear, Cross Creek Early College, Cumberland International Early College, Douglas Byrd, E.E. Smith, Fuller Performance Learning Center, Gray's Creek, Howard Health and Life Sciences, Jack Britt, Massey Hill Classical, Pine Forest, Reid Ross Classical, Seventy-First, South View, Terry Sanford, Alger B. Wilkins, Ramsey Street, and Westover. The Cumberland County Public Library & Information Center began as the Fayetteville Library Society after being incorporated by the North Carolina General Assembly in 1794. The Fayetteville Library Society was the first library organization or group to become incorporated in the state of North Carolina. The current library director for the Cumberland County Public Library and Information Center is Ms. Jody Risacher  and she is also a member of the 2018 Library Board of Trustees for Cumberland County. Board of Trustee members are appointed every three years by the Cumberland County Board of Commissioners. Director Risacher was initially hired as the deputy director for the Cumberland County Public Library & Information Center in the late 1990s and became the library’s director in 2008.