No. Membership lists of nonprofits are generally not public information. Some significant First Amendment litigation has been fought over the right of an organization to keep its membership lists private, even in the face of court subpoenas. 

 

Members of nonprofit corporations normally have a right to get a list for a proper corporate purpose, but use for private commercial activity would not likely be considered a proper corporate purpose. Although it is very hard to enforce, some organizations make it a condition of membership to keep the lists private and will take action to discipline or expel members who use the list for improper purposes. If you are going to distribute the list to your members generally, in a membership directory, for example, be sure that you specify any limitations on its use.