ACS Profile Report
Use this site to find population, housing, economic, and geographic data on the United States.
Federal Financial Institutions Examination Council
Using this site, you can enter a street address and retrieve information for the census tract in which the site is located. Median family income, population, number of housing units, and ethnicity for the tract are examples of data available.
Regional Economic Development, Inc.
REDI works to attract businesses to Columbia. They provide demographic data (look under "Area Data") as well as data on quality of life, buildings and sites, and the business environment.