behavior trends

List of current and historical datasets related to consumer spending and income, including data broken down by various demographic measures and family size

List of all data collections available through the U.S. Department of Justice’s Bureau of Justice Statistics.

List of datasets used to study opinion mining, sentiment analysis, and opinion spam detection

Dataset of over 5.8 million Amazon product reviews (including information on product, rating, review text, and more)

Dataset on loans from Lending Club (a peer-to-peer loan service), extending back to 2007. Includes information on disbursed and rejected loans.

API for current and historical flight information, including flight path, weather, aircraft type, airport details, connections, and more

API for current and (recent) historical flight information, including flight path, speed, aircraft type, airport details, and more

List of lexicons for word-emotion, word-sentiment, and word-color associations derived from a variety of sources (including Amazon, Yelp, Amazon Mechanical Turk, and Twitter)

List of freely available datasets with up to 18 public metrics of cities within the U.S. (e.g., crime, zoning, health inspections, transit)

List of freely available datasets about police-citizen interactions within U.S. cities