Demographics USA - County Edition . Market Statistics, Annual. Sourcebook of Zip Code Demographics . Demographics include population, age, race, household type, household income, and disposable income. Each zip codes predominant industry is listed in the business data section that provides total businesses and total employment.
Zip code ranges for reference.
State and Metropolitan Area Data Book . Statistical Abstract of the United States . Contains a collection of statistics on demographic, economic, social, and other aspects of the economy and society. Direct Mail and Mail Order Direct Marketing List Source . Each entry indicates the source of the mailing list, the characteristics of the names, the geographic areas covered, and the cost per thousand names.