The ISU Library has a number of New Stategist publications on different market segments. Enter "New Strategist" in the search box below to get a list. Items are available in Parks Library.
In the Mergent Intellect suite, the Nielsen PRIZM demographics provide demographic information by geographic area, e.g. how many 20-25 year olds live in the Des Moines metro area? Nielsen's PRIZM segmentation of households is particularly useful for marketing research.
For company market research, the D&B First Research Industry Reports have detailed information about companies and how they fit into their industry.
The Commerce Department provides several options for searching business and economic data.