Statistical Abstract of the United States
National Center for Health Statistics
U.S. Department of Labor
U.S. Department of Education
U.S. Immigration and Naturalization Service
U.S. Census Bureau

ICPSR (The Inter-university Consortium for Political and Social Research (ICPSR), established in 1962, is an integral part of the infrastructure of social science research. ICPSR maintains and provides access to a vast archive of social science data for research and instruction, and offers training in quantitative methods to facilitate effective data use. To ensure that data resources are available to future generations of scholars, ICPSR preserves data, migrating them to new storage media as changes in technology warrant. In addition, ICPSR provides user support to assist researchers in identifying relevant data for analysis and in conducting their research projects)

Integrated Public Use Microdata Series (Integrated Public Use Microdata Series census microdata for social and economic research. Although the decennial census began in 1790, detailed information was first listed for each individual in 1850. One of the great archival projects of the past two decades has been to make huge samples from each of the 1850-2000 censuses machine-readable-including at least 1 percent of the American population enumerated in each year. The product of this immense effort is available free of charge through the magnificent Web site, IPUMS (Integrated Public Use Microdata Series; in Google, seek IPUMS and choose the first entry). Across all years, a given census question (for example, place of birth) is in the same place in the dataset, and each possible response to the question (for example, Germany) has the same numerical code. Special variables have been created on the basis of explicit assumptions, to make the data easier to use. For 1850-1870, each household member's relationship to the head was not ascertained by the census, but an IPUMS-constructed variable offers a reasonable guess based on age, sex, and order of enumeration).

Population Reference Bureau
World Population

American Sociological Association
American Sociological Review
American Journal of Sociology
Social Forces
Annual Review of Sociology
U.S. Sociology Departments

Population Association of America
Population Studies
Population and Development Review
Population and Demography Information