Look for sources of data on income, spending, consumption, demographics, and lifestyle. Some information may be discoverable in the process of doing industry or company research; see those tabs in this guide. The census website provides numerous sources that include income, demographic, and consumer spending statistics.
ABI/INFORM remains the gold standard when it comes to business research databases. ABI/INFORM Collection's massive content set — which includes important full-text journals and much sought-after titles from the business press as well as key trade publications, dissertations, conference proceedings, and market reports — will help today's researchers resolve tomorrow's problems.