Individual state agencies collect data and generate statistics in their areas of responsibility. Use this alphabetical list to find links to agency web sites where you can look for related statistics, data, or reports.
Note: these sources also contain data for Massachusetts and, in some cases, Holyoke.
From the United States Census Bureau. Offers access to data from a variety of sources (Decennial Census, American Community Survey, American Housing Survey, Annual Economic Surveys, Annual Surveys of Governments, Commodity Flow Survey, Economic Census, EEO Tabulation, Population Estimates, Puerto Rico Community Survey, etc.). Searchable by state, county, city, town, or zip code.
Statistical Abstract of the United States is a compendium of social, economic, and political statistics on the United States produced by various government agencies. Current print issues available in the library Reading Room, back issues in the stacks and online. No longer printed by the government, but ProQuest is continuing the tradition. Great for figuring out which government agency produces information on a particular topic as all tables included tell you which agency collected the data. Back issues (to 1886) are located in the Main Stacks.
Think tanks are another source of statistical information. This is a custom Google search hosted by the Harvard Kennedy School Library. It searches "the websites of institutions that generate public policy research, analysis, and activity. These sites are affiliated with universities, governments, advocacy groups, foundations, non-governmental organizations, and businesses." Includes a mix of partisan and non-partisan organizations. Also check out this page's Evaluating Think Tanks section.
From Journalist's Resource, based at Harvard’s Shorenstein Center on Media, Politics and Public Policy. A brief guide to "the methods and concepts that underpin academic studies" that can help you "judge the merits of a particular piece of research. Even if one can’t master statistics, knowing the basic language can help in formulating better, more critical questions for experts, and it can foster deeper thinking, and skepticism, about findings."