Our mailing address is Continuing Church of God, 1036 W. Grand Avenue, Grover Beach, CA 93433. Telephone is 1-805-574-1818.
And yes, in the USA, donations are immediately tax deductible. For those who in live in the State of California, we signed a declaration to apply for the determination letter from California, which, for those in California is legal assurance of the deductibility of donations in California (they are now 100% deductible in all the other US states).