Population Reference Bureau

Fast interactive statistics, including historical trends, on the U.S. as a whole.

Six Billion Human Beings" - Musée de l'Homme, Paris.

A wonderful interactive site created by France's national anthropology museum to lend personal scale to some very large numbers. 

UC Irvine Library.

A guide for all entering students in the Demography & Social Analysis (DASA) Program. 

Counting California.

Gateway to information, facts, and data about the Golden State. 

California Department of Finance.

Umbrella site for the Population Research Unit, "official source of demographic data for State planning and budgeting." Downloadable version of the current California Statistical Abstract. 

Center for Demographic Research (CDR) at California State University, Fullerton.

Definitive source of local-area and intercensal population, housing, and employment data for Orange County, California (the home of UC Irvine). 

U.S. Census Bureau.

Comprehensive source from "America's Factfinder." Data and search engines galore, including the fascinating list of "Frequently occurring first names and surnames." (Click “People > Genealogy”.) How many Americans have your name? 

Public Policy Institute of California.

In-depth, issue-oriented surveys and analyses of California population, politics, and economy.

Constella Futures Group.

Free software (with particular relevance to developing countries), including a well-conceived module (SPECTRUM/DemProj) for cohort-component projections.