Advertising Age: Data Center
Provides statistics useful for marketing and advertising
http://adage.com/datacenter/

Sperling's Best Places for Relocation, Recreation, Retirement
http://www.bestplaces.net/

U.S. Department of Labor: Statistical Sites on the WWW
http://www.bls.gov/bls/other.htm

U.S. Census Bureau
http://www.census.gov/

U.S. Census Bureau: State and Metropolitan Area Data Book 2006
http://www.census.gov/compendia/smadb/

Census Bureau: American Community Survey
Search state demographic data
http://www.census.gov/acs/www/index.html

Census Bureau: American FactFinder
Check out the FactSheet for Community Profiles
http://factfinder.census.gov/home/saff/main.html?_lang=en

Census Bureau: Fast Facts Easy Search
Search for demographics by city, town, county, or zip code
http://factfinder.census.gov/servlet/SAFFFacts?geo_id=&_geoContext=&_street=&_county=&_cityTown=&_state=&_zip=&_lang=en&_sse=onCensus

Bureau: State & County QuickFacts
http://quickfacts.census.gov/qfd

Census Bureau: 2009 Statistical Abstract: The National Data Book
The Statistical Abstract of the United States, published since 1878, is the authoritative and comprehensive summary of statistics on the social, political, and economic organization of the United States.
http://www.census.gov/compendia/statab/

Census Bureau: U.S. Gazetteer
Search for 1990 and 2000 Census data by typing in a zip code or city and state to receive tabular data
http://www.census.gov/geo/www/gazetteer/gazette.html

Census Bureau Economic Subject List A to Z 
http://www.census.gov/main/www/a2z

Census Bureau: Demographic Trends in the 20th Century, A Special Report
http://www.census.gov/prod/2002pubs/censr-4.pdf

Census Bureau: Gateway to Census 2000
http://www.census.gov/main/www/cen2000.html

Ciesin's U.S. Demography
http://www.ciesin.org/datasets/us-demog/us-demog-home.html

Census Bureau: USA Counties
http://censtats.census.gov/usa/usa.shtml

County and City Data Book
http://www.census.gov/statab/www/ccdb.html

Geostat Center: County and City Data Books
http://fisher.lib.virginia.edu/collections/stats/ccdb/

County Business Patterns: Annual Survey Providing Economic Profiles of Counties and States 1998-2006
http://www.census.gov/econ/cbp/index.html

County Business Patterns Searchable by State, Zip Code BusinessPatterns, and Metro Business Patterns
http://censtats.census.gov/cbpnaic/cbpnaic.shtml

Demography and Population Studies: WWW Virtual Library 
http://adsri.anu.edu.au/VirtualLibrary/

Federal Financial Institutions Examination Council
Enter an address to get census demographics such as income, population, and housing data.
http://www.ffiec.gov/Geocode/default.aspx

Fedstats: One-Stop Shopping for Federal Statistics
http://www.fedstats.gov/

Gallup Organization
http://www.gallup.com/

Home Town Locator
Community Profiles of 42,500 US Cities, Towns, & Zip Codes
http://www.hometownlocator.com/

Internet World Statistics
http://www.internetworldstats.com/

Melissa Data Lookup
Get information on zip codes, addresses, income, counties, demographics.
http://www.melissadata.com/lookups/zipcityphone&sid=1

Michigan Statistics
Check out statistics on the Michigan web page
/http://www.walshcollege.edu/?id=205&sid=1

Money Magazine Ranking of the Best Places to Live
http://money.cnn.com/best/bplive/

National Center for Education Statistics
http://nces.ed.gov/

National Center for Health Statistics
http://www.cdc.gov/nchs/default.htm

Penn State Population and Demography Information
http://athens.pop.psu.edu/allen/LinksByCat.cfm?SubjectID=6

PollingReport.Com
http://www.pollingreport.com/

Population Reference Bureau
A one-stop source for U.S. population data covering education, income, labor, employment, mortality, estimates and projections, and more
http://www.prb.org/

Real Estate Journal: The Wall Street Journal Guide to Property
City profiles of major U.S. Cities
http://www.realestatejournal.com/cityprofiles/

Roper Center for Public Opinion Research
http://www.ropercenter.uconn.edu/

SBA: Office of Advocacy: Business Statistics
http://www.sba.gov/advo/research/data.html

SBA: Small Business by the Numbers: Frequently Asked Questions (including business start-ups and closures)
http://www.sba.gov/advo/stats/sbfaq.html

Social Statistics Briefing Room: Current Federal Social Statistics Produced by Federal Agencies
http://www.whitehouse.gov/briefing_room/

Social Science Data on the Internet
http://3stages.org/idata/

StateMaster
Research a large number of statistics by categories for U.S. states
http://www.statemaster.com/index.php

State of the Cities Data Systems, Department of Housing & Urban Development
http://socds.huduser.org/index.html

Statistical Resources on the Web: University of Michigan
http://www.lib.umich.edu/govdocs/stats.html

World Health Statistics 2009
http://www.who.int/whosis/whostat/2009/en/index.html