Ad*Access"Over 7,000 U.S. and Canadian advertisements covering five product categories - Beauty and Hygiene, Radio, Television, Transportation, and World War II propaganda - dated between 1911 and 1955." (Ad*Access website)
Ad Age DatacenterOffers some free advertising data, along with some premium (fee-based) content.
Gallup Analytics"For more than 70 years, Gallup has built its reputation on delivering relevant, timely, and visionary research on what humans around the world think and feel."
Tapestry Segmentation"ESRI Data—Tapestry Segmentation, ESRI's market segmentation system, classifies U.S. neighborhoods into 65 segments based on their socioeconomic and demographic composition." The site includes a tool to find data by zipcode.:
E-Commerce/Internet Marketing
Marketing Platform (Google)"Google Marketing Platform brings together your advertising and analytics to help you make quality customer connections, surface deeper insights, and drive better marketing results." (Google Market Platform for Enterprises website)
Internet World StatsInternet World Stats is an International website that features up to date world Internet Usage, Population Statistics, Social Media Stats and Internet Market Research Data, for over 243 individual countries and world regions