Massachusetts Nonprofit Database - Urban Institute
http://nccsdataweb.urban.org/massNonprofits.php
- NCCS Nonprofit Overview - Start here.
- Summary Tables (Other States)
- Public Charities & Private Foundations
- Other Exempt Organizations: 501(c)(4), (5)s & more
- Top 10 Lists … by expenses, assets, or type
- Largest & Sample of Orgs, by IRS Subsection
- Table Wizards - Customize standard tables