Recommended database for finding Massachusetts demographic information:
Watch this brief tutorial to learn how use DemographicsNow to find demographics, attitudes, and spending habits of consumers in any geography in the US.
Tip: Use the Community Profiles link to explore data visualizations from the MAPC's datasets.
The U.S. Census provides demographic and economic data from the following surveys and censuses: American Community Survey, County Business Patterns, Decennial Census, Economic Census, and others. Free resource.