When Applying for Google for Nonprofits, What do I put in the “Registration Number” Field (USA Churches)?
If you’re located in the USA, enter your church’s Federal Employer Identification Number (Often referred to as a FEIN or EIN) which you received from the IRS in the Registration Number box.
Even if your church has it's 501(c)3 status as part of a Group Exemption, you still want to enter your church’s EIN. Do not use your denomination’s EIN.