1990 Demographic Profile Generator (U.S.)--The generator allows you to create a demographic profile for a particular census grouping (e.g., census tract, block group, city, etc.) by entering in FIPS codes, zip codes, etc. There is also a link for code lookup.
2000 Demographic Profiles (U.S.) (Urban Information Center)--This website allows one to look up 2000 Census
American Community Survey (ACS)--The ACS has replaced the old "long-form" version of the Decennial Census and is now used to collect the more detailed socio-economic information that the Decennial Census no longer gathers. Note that the ACS consists of multiple "data products" gathered over different ranges of time and covering different levels of geography. See http://www.census.gov/acs/www/data_documentation/data_main/ for an overview of different ways to access ACS data.
American FactFinder--The American FactFinder is an extensive source for census statistics from the U.S. Census Bureau. Users can create data tables from the Decennial Census (2000 and 2010), the American Community Survey (2000-present), and the Economic Census (1997, 2002, and 2007) and download those tables into spreadsheet files. See http://factfinder2.census.gov/faces/nav/jsf/pages/what_we_provide.xhtml for a list of available data collections..
Carolina Population Center--The CPC is an organization located at the University of North Carolina, Chapel Hill, that promotes demographic research. There are links to the research projects underway as well as a nice set of links to various demographic research sources.
CDC Wonder Population Information--CDC Wonder includes a site that provides population estimates for different age, race, and gender groups. Users can get estimates at the national, state, or county levels, from 1990 onwards.
Census Bureau (U.S.)--The Census Bureau gathers a dizzying amount of social, demographic, and economic information about the United States through various means. The Subject Index is a good starting point for browsing and searching through the Bureau's wealth of information.
Census Bureau Population Estimates--The Census' Population Estimates site provides annual population estimates for different categories of age, race, and gender, extending back to 1970. Estimates are at the national and state levels, with some additional estimates for counties and metro areas.
Current Population Survey (CPS)--The Current Population Survey is a joint project between the Bureau of Labor Statistics and the U.S. Census Bureau. The CPS is a monthly survey that collects basic socio-demographic information and labor force characteristics. To access CPS data files, users can go through the Data Ferrett (see below). Alternately, they can go to the National Bureau of Economic Research's CPS site here or to the IPUMS CPS site here.
Current Population Survey Table Creator--The CPS Table Creator is a convenient way of generating summary tables and breakdowns for topics such as health insurance or poverty or education attainment, drawing on data from the Annual Social and Economic Supplement of the CPS.
Data.Gov--Data.Gov is a central portal for datasets, both statistical and geospatial, that are produced by the Federal Government of the United States. While the site is not exhaustive in its coverage, it does include data from multiple agencies within the federal government. The data catalog is located at http://explore.data.gov/.
Data Ferrett--Data Ferrett is an on-line tool for extracting variables from a selection of data collections or creating tabulations and frequencies from those data. The Data Ferrett contains data from various Current Population Surveys, income studies, and health surveys.
Historical Census Browser--The Geostat Center at UVa has compiled county-level data from the U.S. Census from 1790 to 1960 (using data from ICPSR #0003) and made that data available via a very-user friendly web brower.
Historical Statistics of the United States Millennial Edition (HSUS)--The HSUS is an excellent compilation of historical statistics on the United States, extending from colonial times up to the 2000 Census. Tables from the HSUS can be saved as either .pdf files or Excel files. The HSUS is also available via Databases at Emory.
Human Mortality Database (HMD)--The HMD (which requires a free registration) contains population data (e.g. mortality, life expectancy) for many countries (largely from the OECD) and links to related external sites.
ICPSR Census 2000 site--This is a special site from the ICPSR with Census 2000 data. Data are available in various geographies and formats, including microdata files.
IPUMS (Integrated Public Use Microdata Series)--The IPUMS project at the University of Minnesota is an excellent source for Census data in the form of microdata samples from each decennial Census from 1850-2000 and from the American Community Survey for 2001 and onwards. See http://usa.ipums.org/usa/sampdesc.shtml for a list of the samples available via IPUMS. The IPUMS project also hosts a growing collection of microdata census files from foreign countries that can be accessed at https://international.ipums.org/international/.
The International Data Base--The Census Bureau's International Data Base (IDB) contains statistical tables of demographic and socio-economic data for 227 countries and areas of the world.
National Historical Geographic Information System (NHGIS)--The NHGIS at the University of Minnesota distributes boundary files for Census tracts back to 1910 (varying by state), as well as historical and current aggregate Census data at various geographic levels.
Office of Population Research (OPR)--The well-known OPR at Princeton University archives a number of datasets of interest to those studying demography and demographics.
Population Studies Center (University of Michigan)--The Population Studies Center is a great site for interdisciplinary research on population studies. The site also maintains a significant collection of data.
SEER U.S. Population Data--The National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program distributes annual county-level population data broken down by combinations of age, gender, and race/ethnicity, for 1969 onwards.
SimplyMap--SimplyMap is an Internet-based mapping application that enables users to develop interactive thematic maps and reports using thousands of demographic, business, and marketing data variables. Users can download data in spreadsheet-friendly formats and also use data with GIS software. Go here for a quick guide to SimplyMap. SimplyMap is also available via Databases at Emory.
Social Explorer--Social Explorer provides quick and easy access to current and historical census data and demographic information. Its contents include the entire U.S. Census from 1790 to 2010, annual updates from the American Community Survey, data on religious congregations for the United States for 2009, decennial religious congregation data for 1980-2010, and carbon emissions data for 2002. Users can create reports and maps at various levels of geography, including counties, Census tracts, Census block groups, and zip codes, depending on data availability. Social Explorer is also available via Databases at Emory.
State and County Quick Facts--This site contains a clickable map of the US to obtain demographic profiles of different states. The subnational level data is subsequently compared with the U.S. as a whole. There is also a significant amount of data from the 2000 and 2010 censuses.
State of the Cities Data System (SOCDS)--The Department of Housing and Urban Development (HUD) has produced SOCDS to provide quick access to tabular data for social, demographic, and economic variables at different geographic levels. HUD has also compiled and organized a collection of datasets produced by or in association with its Office of Policy Development and Research, along with an accompanying reference guide to those datasets.
Statistical Abstract of the United States--Electronic version of the popular resource. The Statistical Abstract contains a wealth of information on numerous socio-economic and demographic indicators for the US. Historical data tables taken from the Statistical Abstract are available here. There is also a CD version of the Statistical Abstract available in the Data Center.
U.S. Citizenship and Immigration Services Immigration Statistics--U.S. Citizenship and Immigration Services (formerly the INS) publishes the Yearbook of Immigration Statistics and other collections of statistical information on topics such as immigration flows, immigration enforcement, and estimates of unauthorized immigration populations.
U.S. County and City Data Book (University of Virginia)--The 1988, 1994, and 2000 electronic editions are available here. These data books contain a substantial amount of information on a variety of state-, county-, and city-level indicators. More recent statistics are available from the Census Bureau.
World Population Prospects-- This database is produced by the United Nations' Population Division and contains cross-national data on basic population demographics and vital statistics (e.g. birth and death rates, maternal mortality, population by age and gender and urban/rural areas).