Statistics

Mediamark Reporter (MRI)

Provides information on demographics, product and brand usage, and advertising media preferences based on survey responses from a sample of over 25,000 consumers in the United States. Great tips from Pace University on using Mediamark Reporter. (Doesn't work with Safari browser) 2002-present.
Statista
Data on topics such as pet ownership, music sales, poverty, social media use, and much more. Or browse their market research categories. View online and download as .xls.
American FactFinder
Population, housing, economic, and geographic data from the U.S. Census. Includes decennial data (c2010) as well as American Community Survey estimates data (c2010).
Statistical Abstract of the U.S.
Statistics on the social, political, and economic organization of the United States. Available as pdf and download as .xls.
Pew Internet & American Life
Data on the impact of the Internet on families, communities, work and home, daily life, education, health care, and civic and political life. See also: Pew statistics and infographics; or browse by topic.

Health Statistics

N.C. Department of Health and Human Services (DHHS): Statistics and Publications by Topic
Data from the N.C. Division of Mental Health and other NC health data. See HIV/STD to find HIV rates by year and N.C. county.

image from statista

image from flickrCC.