The Nonprofit Sector in the US
As of 2016, there were 1.5 million nonprofit organizations registered with the IRS in the United States. However, an unknown number of nonprofits are not registered with the IRS because they are not required to do so or are not registered for other reasons. The IRS count excludes most congregations, small grassroots organizations, and some other nonprofits. Based on our research of the nonprofit sector, we estimate that the inclusion of all of the aforementioned organizations would bring the total to more than 2.5 million nationally.