Please Note: Massachusetts is just one state in the nation, so our statistics are often presented within the context of national surveys. Examples of national sources that provide useful data on Masschusetts are Statistical Abstract of the United States, Book of the States, and State Rankings . Likewise, County and City Extra : Annual Metro, City, and County Data Book would have useful data on the Boston area or (for example) Middlesex County. Consult a librarian for other suggestions related to your topic.